modification dates for phil's home page:

cur year : 2012  2011 2010  2009  2008 2007 2006 : 2005 : 2004 : 2003 : 2002 : 2001 : 2000

• 06may13   added page for millstone hill wideband feed.
  
• 06may13   System performance for the apr13
• 06may13   fractional occurrence of rfi for apr13
• 06may13  Alfa Tsys for the month of apr13
• 06may13   ages (a2048) monitoring of data for month of apr13
• 06may13   sitepower monitoring for month of apr13
• 06may13  tiedown tensions for apr13
• 06may13  azimuth motor torques vs velocity for apr13
• 02may13  tiedown tensions for apr13. When do the tiedowns lose tension..
• 29apr13   measuring the punta Borinquen radar blanking in the AO direction.
  
• 29apr13   check lbw filterbank on 22apr13 by switching between filters.
  
• 24apr13   new punta borinquen carsr 1274,1332 Mhz radar
  
• 23apr13   added lbw rfi filter bank page
  
• 22apr13:  a2765 dps processing on 21apr13 using xband.jumps in adjacent bands.
  
• 13apr13   System performance for the mar13
• 13apr13   fractional occurrence of rfi for mar13
• 13apr13  Alfa Tsys for the month of mar13
• 13apr13   ages (a2048) monitoring of data for month of mar13
• 13apr13  tiedown tensions for mar13
• 13apr13  azimuth motor torques vs velocity for mar13
• 11apr13:   cband  4920 rfi present 06apr13-09apr13.
• 10apr13   a2749. started daily monitoring of their data. polB had drift at start of run.
  
• 09apr13:  a2749 using lbw  had polB drift by 2% for the first 45 minutes of run.
• 06apr13   cband 5-6 ghz azswings done 28aug12.
  
• 04apr13   added alfa shutter page.
  
• 03apr13   started ao19 phased array feed page.
  
• 03apr13   netgear gsm7238fs network switch. Measured 17oct12 by luis in the screen room.
• 03apr13   dome 430 polA tsys close to 400 K during afternoon Tsys measurements.
  
• 01apr13   netgear prosafe gs110tp network switch. Emissions Measured 06sep2 by luis in the screen room
• 01apr13   netgear prosafe gs110t network switch. Emissions measured16oct12 by luis in the screen room
• 31mar13   Softek ivuloto device at visitors center. measured 15oct12 by luis in screen room.
• 28mar13   p2787 pulsar observing (27mar12) had spectral jumps from digital filter in mocks.
  
• 27mar13  rserv2 bulldozer fftw times using kernel 3.4.33. multithreaded ffts improved.
  
• 27mar13  6900-7050 rfi seen 11mar13,16mar13 by chris salter
• 25mar13  xmitting tone from control room patio: Mapping screen room birdie strength to detectability on the telescope
• 23mar13  azimuth peak with za=17deg and transmitting from control room patio.
  
• 23mar13  elo touch screen cash register emissions: in screen room and on telescope.
  
• 21mar13  added daily monitoring of site power
  
• 12mar13  rfihilltop will plot multiple days of rfi hilltop monitor data. dynamic spectra or daily averages.
  
• 12mar13   System performance for the feb13
• 12mar13   fractional occurrence of rfi for feb13
• 12mar13  Alfa Tsys for the month of feb13
• 12mar13   ages (a2048) monitoring of data for month of feb13
• 12mar13  tiedown tensions for feb13
• 12mar13  azimuth motor torques vs velocity for feb13
• 08mar13  added page with radar calibration satellites.
  
• 06mar12 measure rfi from touch screen cash register in screen room (for cafeteria).
  
• 05mar12  trelectronics LB65 distomat tested for rfi in screen room.
  
• 04mar13 td 4 position jumps to 24 inches and back on 02,03mar13
  
• 28feb13  look at new rf monitor installed at the visitors center.
  
• 23feb12  galfacts see wideband rfi in alfa on 14feb13.
  
• 21feb12  updated  software measurements page. fftwV3.3.3 and added some comparisons.
  
• 15feb13   added amd software documentation page.
  
• 15feb13  rserv2 (amd 6272 64 core machine) fftw timing results using avx instructions.
  
• 14feb13   sine wave test 04feb13 with aeronomy rdev device.
  
• 13feb13    cband calibration run after dewar reinstalled in dome.
  
• 10feb13   added t2686 (herb and frank) userproj page. plasma line images once an hour for run.
  
• 07feb13   System performance for the jan13
• 07feb13   fractional occurrence of rfi for jan13
• 07feb13  Alfa Tsys for the month of jan13
• 07feb13   ages (a2048) monitoring of data for month of jan13
• 07feb13  tiedown tensions for jan13
• 07feb13  azimuth motor torques vs velocity for jan13
• 04feb13   added daily plots of dewar bias voltages and currents for single pixel receivers.
  
• 02feb13:   cband polB instability at crosshead freq. also seen in stage 2 drain current.
• 01feb13:  x111 dynamic spectra for lband nov/dec12
• 31jan13   added manuals for "new" site power substation controller.
  
• 31jan13  added schematics, manuals for building II A/C unit.
  
• 31jan13  building II A/C schematics
  
• 28jan13:   spectrum analyzer at building 2 a/c unit shows rfi.
• 28jan13  preliminary 327 Mhz results for building 2 shutdown on 24jan13.
  
• 24jan13  azimuth encoder difference before/after az encoder 2 changed on 17jan13.
  
• 24jan13   mock spectrometer b4sXg0 PI FIFO overflow during galfacts observing.
• 23jan13: az position for peak signal from building 2.
• 14jan13  simulate puppi a/d sampling errors.
  
• 13jan13  calibration data jun12-dec12. updated pointing offsets.
  
• 11jan13   nov12 horn position survey.
  
• 10jan13   yearly platform wind speed plots. added 2012
  
• 10jan13   yearly platform temperature plots. added 2012.
  
• 10jan13   System performance for the dec12
• 10jan13   fractional occurrence of rfi for dec12
• 10jan13  Alfa Tsys for the month of dec12
• 10jan13   ages (a2048) monitoring of data for month of dec12
• 10jan13  tiedown tensions for dec12
• 10jan13  azimuth motor torques vs velocity for dec12

2012 (top)

• 13dec12   performance of 430 dome cavity filter (with notches) in front of dewar.
  
• 13dec12   System performance for the nov12
• 13dec12   fractional occurrence of rfi for nov12
• 13dec12  Alfa Tsys for the month of nov12
• 13dec12   ages (a2048) monitoring of data for month of nov12
• 13dec12  tiedown tensions for nov12
• 13dec12  azimuth motor torques vs velocity for nov12
• 12dec12   oct-nov12 lbw Tsys increase. calibration data shows it's not a problem with the cals.
• 10dec12.   sbn compare old, new (out of focus) , new (in focus) calibration runs.
  
• 10dec12    07dec12 lbw cooldown. 16k stage took 1 hour.
  
• 07dec12  a2704 430 dome continuum mapping show polA ripples (after filter changed).
  
• 06dec12   430gr azswings on  30nov12.  polA filter removed, tv station intermods, az dependence, time periodic birdies
• 04dec12   430gr, 19nov12 take spectra while moving radar,radio astronomy switch. Ripple in both positions.
  
• 03dec12   lbw dewar 16k stage took < 36 hours to cool down
  
• 27nov12   System performance for the oct12
• 27nov12   fractional occurrence of rfi for oct12
• 27nov12  Alfa Tsys for the month of oct12
• 27nov12   alfalfa (a2010) monitoring of data for month of oct12
• 27nov12   ages (a2048) monitoring of data for month of oct12
• 27nov12   alfa stability (using a2010 date) PolA/polB ratios for oct12
• 27nov12  tiedown tensions for oct12
• 27nov12  azimuth motor torques vs velocity for oct12
• 26nov12   430 dome x111 data from oct,nov12 show the polA ripple coming and going.
• 23nov12  new sbn receiver. calibration runs comparing old and new receiver.
  
• 22nov12   Pr Law title 23, Part I chapter 11: Radio-Astronomy Facility zoning act.
  
• 22nov12   fcc Arecibo coordination zone document
  
• 21nov12  cal values for new sbn receiver measured and installed.
  
• 16nov12   added rabbit bl2100 sbc documentation (used in rf radiation monitor).
  
• 14nov12  polA ripple in lbw from 1370 highpass filter rf switches.
  
• 14nov12  Tsys contribution various configurations of sbn  postamps.
  
• 09nov12  added hardware page for cable car.
  
• 06nov12  a2713 dps with cband. 1 mock with glitches. 1 with ripple for 1 pattern.
  
• 02nov12  preliminary results from nov12 horn survey
  
• 31oct12  cband polA stage 2 drain current has large rms with amp#18, but not amp#19
  
• 24oct12   hilltop rfi monitor. Added schematics and program documentation.
  
• 22oct12   430 dome polB jennings relay causing little power from telescope to get to amps.
  
• 22oct12   a2415   430 mapping
  
• 15oct12   430 dome polB gain is 10% of the expected  value.
• 11oct12   System performance for the sep12
• 11oct12   fractional occurrence of rfi for sep12
• 11oct12  Alfa Tsys for the month of sep12
• 11oct12   alfalfa (a2010) monitoring of data for month of sep12
• 11oct12   ages (a2048) monitoring of data for month of sep12
• 11oct12   alfa stability (using a2010 date) PolA/polB ratios for sep12ii
• 11oct12  tiedown tensions for sep12
• 11oct12  azimuth motor torques vs velocity for sep12
• 10oct12  alfalfa sep12 data shows long recovery times in beam1b with radars.
  
• 09oct12  mock spectrometer test with cband and pshift=0x1555 gets rid of spectral jumps.
  
• 09oct12  added page describing mock spectral jumps spaced by 2^n channels
  
• 07oct12  mock spectrometer fgpa dma overflow on b0s1g0 during a2130
  
• 04oct12  a2708 freqsw partial results.
• 02oct12  p2679 bits flips in mock highres mode.
  
• 01oct12  added table of all pdev spectrometers and their status.
  
• 28sep12  azwings with cband hi 6-7 Ghz shows rfi az dependence
  
• 28sep12  a2708 freqsw partial results.
  
• 27sep12  cband SEFD ratio PolA/Polb after polA amp change shows Tsys is different
  
• 27sep12  a2708 freqsw partial results.
  
• 20sep12  430gr TsysPolA is jumping by 10 to 15 K.
  
• 19sep12 installed new cband high cal values that were measured back on 28jun12.
  
• 17sep12  installed new cband cal values that were measured back on 28jun12.
  
• 14sep12  09sep12-11sep12: 2nd lo synthesizers 1-4 are stuck at at a fixed frequency.
  
• 11sep12   puppi: debugging 32 chan, 200 Mhz raw mode
  
• 05sep12   atm power profiles show cal dropouts.
  
• 03sep12   System performance for aug12
• 03sep12   fractional occurrence of rfi for aug12
• 03sep12  Alfa Tsys for the month of aug12
• 03sep12   ages (a2048) monitoring of data for month of aug12
• 03sep12  tiedown tensions for aug12
• 03sep12  azimuth motor torques vs velocity for aug12
• 30aug12  cband cable from bias chassis to dewar replaced on 29aug12.
  
• 29aug12  5275 Mhz  Expernet (xairnet) internet test from jonathan friedman's house.
  
• 28aug12  27aug12 sbh bias box moved to cband. polA stage 2 drain current problem remains.
• 28aug12 added page with 2012 cband polA instabilities.
  
• 28aug12 interim correlator sbc4A band had a larger tsys than other sbc. Function of bandwidth.
  
• 24aug12 a2471 brown dwarf bursts at cband (alex).. processed data 2011,2012.
  
• 22aug12  monitor wind speeds during storm isaac
  
• 20aug12 cband the rms the rf power for polA increases while stage 2 bias drain current jumps around.
  
• 16aug12  xband cal values remeasured on 01jul12 installed 16aug12.
  
• 16aug12 added xband stokes plots
  
• 12aug12  lband wide cal values remeasured on 28jun12. installed 12aug12.
  
• 08aug12   sband tx. plot old and new voltage to power lookup tables for antenna power.
  
• 08aug12  added page  " measuring the sband transmitted power."
  
• 08aug12   fractional occurrence of rfi for jul12
• 08aug12  Alfa Tsys for the month of jul12
• 08aug12   ages (a2048) monitoring of data for month of jul12
• 08aug12  tiedown tensions for jul12
• 08aug12  azimuth motor torques vs velocity for jul12
• 31jul12  sband transmitter. plot lro power meter values vs "antenna power" from 723 program.
  
• 31jul12   cband polB bias values jul12 show stage 2 currents polB jumping.
  
• 05jul12   fractional occurrence of rfi for jun12
• 05jul12  Alfa Tsys for the month of jun12
• 05jul12   ages (a2048) monitoring of data for month of jun12
• 05jul12  tiedown tensions for jun12
• 05jul12  azimuth motor torques vs velocity for jun12
• 05jul12  added rfi page for yiye avila's tower on roncador.
  
• 02jul12  check cband receiver (31may12) after it was reinstalled in the dome.
  
• 01jul12  bench marked intel avx routines using fftw-3.3.2 on megs3
  
• 01jul12  glitches in rf from alfa monitoring are only present with bias monitoring.
  
• 29jun12  added plots of rf monitor at visitor center: feb09-jun12
  
• 29jun12 refit dut1 (ut1-utc)  for leap second second 01jul12
  
• 26jun12  sband narrow stokes calibration results (01jan07 -> 31may12)
  
• 26jun12   sband wide stokes calibration results (may03->31may12)
  
• 25jun12  cband stokes calibration results (16nov10 thru 31may12)
  
• 25jun12  sband high stokes calibration results (28jun04 thru  31may12)
  
• 25jun12  lband wide stokes calibration results (16jan11 thru 27may12).
  
• 25jun12  cband high stokes calibration results.
  
• 20jun12  pointing error as we tilt the platform. Computed and measured values.
  
• 19jun12  12 meter first light.
  
• 18jun12  pointing error as we move the platform vertically. computed and measured offsets.
  
• 18jun12  rfi in screen room from 12meter camera (measured by luis)
  
• 16jun12  tiltsensor az swings and za strips
• 16jun12   tiltsensor az swings
  
• 12jun12  p2030 data show dewarmonitoring and .838Hz birdie (but no 1.5 hz rfi)
  
• 09jun12   added page tracing sband body current signal through the schematics.
• 08jun12  distomat 6 loses alignment when test distomat mounted on it.
  
• 08jun12  added page describing cima changes for  turning on,off alfa bias monitoring.
  
• 05jun12  model18 verify completed, model18 installed.
  
• 04jun12   fractional occurrence of rfi for may12
• 04jun12  Alfa Tsys for the month of may12
• 04jun12   ages (a2048) monitoring of data for month of may12
• 04jun12  tiedown tensions for may12
• 04jun12  azimuth motor torques vs velocity for may12
• 04jun12   fractional occurrence of rfi for apr12
• 04jun12  tiedown tensions for apr12
• 04jun12  azimuth motor torques vs velocity for apr12
• 02jun12   alfa dewar monitoring is creating periodic gain glitches in the receiver.
  
• 28may12  a2130 (galfacts) see galileo satellite interference at 1278.7 Mhz.
• 24may12 tilt sensor az swings. cband receiver in the lab
  
• 23may12: strobe lights coming from yiye avila's tower on mount roncador.
  
• 22may12  added plots for a2430 browndwarf stokesV bursts (from dec09)
  
• 19may12 td8 releases by itself.
  
• 16may12  r2696 ( lro) run on the moon.
  
• 14may12  r2696 lro test run showing chirped transmitter pulse.
  
• 12may12 cband stage 2 polA drain current, still jumping around after switch to stage 3 circuitry.
  
• 11may12 faa radar ipps change by .3%. Dip switches for timing probably set incorrectly.
  
• 11may12 cband crosshead oscillation causes a 1% gain jump in Tsys.
  
• 10may12 cband stage 2 polA drain current jumps after bias adjusted on 09may12.
  
• 05may12  2394.5-2403.5 Mhz rfi coming from yiye avila's tower (roncador).
  
• 05may12  3rd harmonics of fm stations 102.9.104.1 from route 10.
  
• 03may12  calibration scans using alfa after reinstallation on 20apr12.
• 30apr12   tilt  sensor measurements after td12 jack replaced.
  
• 24apr12  ao users committee talk for 2012.
• 23apr12  td12 jack replaced. New limits set
  
• 20apr12  327 rcvr cavity filter (before dewar) bandpass shape.
  
• 20apr12  added tiedown grounding page. Include resistance to ground measurements for td12
  
• 19apr12 td12 stops with foldback error. Needs large torques to move.. jack to be replaced.
  
• 18apr12  a2335 lbw 14apr12. rain causes lbw tsys to increase.
  
• 10apr12   fractional occurrence of rfi for mar12
• 10apr12  tiedown tensions for mar12
• 10apr12  azimuth motor torques vs velocity for mar12
• 04apr12  simulate linefeed gain vs za. Compare with measured values.
  
• 03apr12 can we replace the 430tx with a ring of amiser  panels at the edge of the dish?
  
• 31mar12 terminate input to 430 rcvr  at various places before amp looking at polA ripple.
  
• 28mar12  Plots showing ch430 transmitter  modAnode not staying completely off after beam off.
  
• 28mar12  430 dome polA ripple while receiver on load.
  
• 22mar12  cband microwave interference at 5990-6020.
  
• 20mar12  added kollmorgen motor repair log.
  
• 17mar12  polA ripple 430 dome continues.
  
• 14mar12   fractional occurrence of rfi for feb12
• 14mar12  Alfa Tsys for the month of feb12
• 14mar12   ages (a2048) monitoring of data for month of feb12
• 14mar12  tiedown tensions for feb12
• 14mar12  azimuth motor torques vs velocity for feb12
• 12mar12 scramPuppi. monitor scramNet multicast packets and  load puppi shared memory.
  
• 08mar12 2140-2150 rfi from Advanced Wireless System (AWS).
  
• 05mar12 pointing model18 created. Not yet installed.
  
• 29feb12 tiedown daily monitoring now includes status bits for all 3 tiedowns.
  
• 28feb12  refit ut1 - utc polynoimial for mar12 thru jun12
  
• 26feb12  tiedown 1 sec tick fiber distribution switched to 3 separate fibers.
  
• 24feb12   fractional occurrence of rfi for jan12
• 24feb12  Alfa Tsys for the month of jan12
• 24feb12   ages (a2048) monitoring of data for month of jan12
• 24feb12  tiedown tensions for jan12
• 24feb12  azimuth motor torques vs velocity for jan12
• 22feb12 mock spectrometer dump status timeouts resolved.
  
• 20feb12  tiedown 4 tmscounter time drifting.
  
• 20feb 12 b6sNg0 (pdevs7) continues to timeout on while taking data.
  
• 17feb12  puppi first light 14feb12 with lbw. Radars are saturating.
  
• 16feb12  azswings with tilt sensors to check "new" td positions. 15,16may12.
  
• 13feb12  10feb12 changed td a/d signal conditioning resistor for spdmon from 46.2k to 22k.
  
• 11feb12 debugging problems with pdev: integration stops early
  
• 08feb12  added schematics for jon hagens 430 transmitter manual
  
• 07feb12  hp87130 errors rfattn polB does not switch.
  
• 02jan12  move td's, read output voltages, and then compare with readback values.
  
• 01feb12  updated scramnet and multicast data documentation.
  
• 29jan12  .shs clp processing times using  45 threads on rserv1.
  
• 29jan12  16jan12 reflection coef measurements of 430 Tx waveguide. Reflections and losses.
  
• 28jan12  table of  distance along 430 waveguide  using waveguide section lengths from hagen's manual
  
• 27jan12  steps taken when making a pointing model.
  
• 27jan12  azencoder 1 replaced. pictures of how far the pointer at 270 moved.
  
• 25jan12   tiedown commanded and amplifier readback speed mismatch.
  
• 23jan12  azimuth encoder difference after enc1 coupling tightened.
  
• 20jan12  corcom ac power line filters.
  
• 10jan12  yearly  platform temperature plots for 2011
  
• 10jan12   yearly windmeter meter plots for 2011
  
• 10jan12   fractional occurrence of rfi for dec11
• 10jan12  Alfa Tsys for the month of dec11
• 10jan12   ages (a2048) monitoring of data for month of dec11
• 10jan12  tiedown tensions for dec11
• 10jan12  azimuth motor torques vs velocity for dec11

2011 (top)

• 13dec11   description of merging multiple sps atm ipps for T2574
  
• 11dec11   10dec11 sband log plots
  
• 07dec11   alfa filter bank switching test.
  
• 06dec11   replacing the tiedown control system.
  
• 05dec11   rediscovering the Galaxy using atm az swings.
• 05dec11   rfi from vlfant from sri. azswing (narrow band) around 1400Mhz.
  
• 05dec11   fractional occurrence of rfi for nov11
• 05dec11  Alfa Tsys for the month of nov11
• 05dec11   alfalfa (a2010) monitoring of data for month of nov11
• 05dec11   ages (a2048) monitoring of data for month of nov11
• 05dec11   alfa stability (using a2010 date) PolA/polB ratios for nov11ii
• 05dec11  tiedown tensions for nov11
• 05dec11  azimuth motor torques vs velocity for nov11
• 30nov11   fractional occurrence of rfi for oct11
• 30nov11  Alfa Tsys for the month of oct11
• 30nov11   alfalfa (a2010) monitoring of data for month of oct11
• 30nov11   alfa stability (using a2010 date) PolA/polB ratios for oct11ii
• 30nov11  tiedown tensions for oct11
• 30nov11  azimuth motor torques vs velocity for oct11
• 28nov11   alfa beam 2a shows some jumps in ages data.
  
• 27nov11   added page with plots of sband transmitter log files.
  
• 25nov11   azimuth encoder difference after az encoder 2 replaced.
  
• 25nov11   added daily summary plot for az,gr,ch.
  
• 19nov11     sband antenna power vs lro power meter.
  
• 15nov11   page for programmable ac power strip:
  
• 08nov11   possible 2 mhz comb in 327 receiver.
  
• 08nov11   rfi from alfa motor controller at 327 Mhz measured 03nov11.
  
• 07nov11   Looking for rfi from the visitor center by shutting off its power (01nov11)
  
• 07nov11   xmitting from the visitor center platform to find the azimuth peak (01nov11)
  
• 04nov11   puntas salinas creates intermods in a2130 data 02nov11.. added a2130 overflow counts
  
• 31oct11   added documentation for corstripch interim cor stripchart program.
  
• 30oct11   td 4 makes load noises 27,29oct11.
  
• 30oct11   i/o rates 29nov11 on pdevs discs during p2627 (VoltSampling),p2010,a2130(galfacts)
  
• 27oct11   fit C0,1az, 3az pointing errors for alfa after reinstallation in sep11.
  
• 26oct11   a2621 on/off and dps patterns using 800 Mhz rcvr.
  
• 24oct11    alfa calibration scans sep_oct11 after alfa reinstalled.
  
• 22oct11   19oct11 cleaning alfa fiber connectors jumped bm1a Tsys to 150K.
  
• 20oct11   174 khz ripple in alfa fibers after fiber connectors were cleaned (data from 19oct11)
  
• 18oct11   174 khz ripple in alfa fibers measured using galfa data from 14oct11
  
• 18oct11   added page for galfa spectrometer software
  
• 17oct11   2401.5 Mhz rfi moves down to 2396.5 on 08oct11.
  
• 17oct11   fractional occurrence of rfi for sep11
• 17oct11  Alfa Tsys for the month of sep11
• 17oct11   alfalfa (a2010) monitoring of data for month of sep11
• 17oct11   alfa stability (using a2010 date) PolA/polB ratios for sep11ii
• 17oct11  tiedown tensions for sep11
• 17oct11  azimuth motor torques vs velocity for sep11
• 14oct11   added a2130 caldeflection plots for start of oct11 run (07-13)
  
• 12oct11   added monthly plots of ism band from hilltop monitoring. Show 2395 rfi.
• 11oct11   Beam 4a tsys while dana took data with the spectrum analyzer.
  
• 08oct11   added rfi page for AC units above buildings I and II.
  
• 07oct11   alfa a2010 total power: bm4a with low drain current and bm6b failure
  
• 04oct11   alfa bm6b power drops out 03oct11.
  
• 02oct11    Aeronomy data page with clp clutter removal.
  
• 30sep11   6595 rfi, 30 Mhz wide seen by a2622 using cband Hi.
  
• 29sep11   1408 Mhz rfi coming from AC unit on roof of building I.
  
• 27sep11   alfa bm5a dropout seen by alfalfa.
  
• 26sep11   1408 Mhz rfi in alfa data.
  
• 22sep11  moved software documentation on home page to software.html. reorganized it.
  
• 21sep11  added ryan seals thesis about the echotek card and digital receiver.
  
• 14sep11  mock time domain sampling on 1713+0747 at lband taken 11sep11
• 11sep11  8 bit rms  vs adjpower value for time domain sampling.
  
• 10sep11   fractional occurrence of rfi for aug11
• 10sep11  tiedown tensions for aug11
• 10sep11  azimuth motor torques vs velocity for aug11
• 08sep11  sbn,alfa calibration runs to check alfa pointing after reinstallation.
  
• 01sep11  added alfa temps during cool down sequence on 16mar11
  
• 24aug11  430 power meter data (ladybug)
  
• 24aug11  wind speeds during tropical storm irene.
  
• 18aug11  table of intel IPP lib FFT times on aserv11 (my benchmark)
  
• 17aug11  lbw 1360.015 birdie. azswing shows not in the dome.
  
• 16aug11  430 dome polA ripple remains when radar/radioastronomy switch bypassed (11aug11)
  
• 16aug11  lbw 1360 narrow band rfi.
  
• 15aug11  .pdev file documentation for mock spectrometer.
  
• 15aug11  interim cor sbc1 polB spike in center of band for bw <=12.5Mhz
  
• 15aug11  intel performance primitives library fft times on aserv11 (intel benchmark)
  
• 10aug11   fractional occurrence of rfi for jul11
• 10aug11  tiedown tensions for jul11
• 10aug11  azimuth motor torques vs velocity for jul11
• 10aug11  short duration broadband rfi seen by p2558 in 327 rcvr.
• 06aug11  rdev data on telescope shows overflow wraparound.
  
• 05aug11  testing tamarra's rdev device using a sine wave
  
• 02aug11  fftw timing benchmark for aserv11 (nehalem) dual quad core machine.
  
• 01aug11  430dome polA ripples in a2599 dps data.
  
• 01aug11  added diagram (list) of pdev control programs and what they do).
  
• 31jul11   started online documentation for .pdev file formatt for mock spectrometer
  
• 28jul11   started online documentation for mock spectrometer psrfits file format.
  
• 28jul11   fractional occurrence of rfi for jun11
• 28jul11  tiedown tensions for jun11
• 28jul11  azimuth motor torques vs velocity for jun11
• 01jul11    galfacts beam2a caldeflection jumps by 4% 28,29jun11
  
• 01jul11    pointing corrections after removing 1az term from platform.
  
• 30jun11    added hagens 430 tx manual.
  
• 28jun11    tilt sensor 2 azswings 22jun11 to check 1 az term.
  
• 26jun11    galfacts (a2130) adc and pfb overflows for jun11 vs za.
  
• 25jun11   TRelectronics distomat (llb500) rfi test in screen room 15,23jun11
  
• 23jun11   mock spectrometer. tables of minimum allowable integration times.
  
• 23jun11   430gr polA ripples return.
  
• 22jun11   sbc3,4 of interim correlator Tsys increases by 3K. halfband 3,4 +5volt supply error.
  
• 17jun11  fit 1az term to new tiedown positions and add to model
  
• 15jun11   fractional occurrence of rfi for may11
• 15jun11  tiedown tensions for may11
• 15jun11  azimuth motor torques vs velocity for may11
• 10jun11    tested compressor monitor on telescope 06jun11 using 327 receiver
  
• 06jun11    tiedown 8 failure 110602. fixed 110606.
  
• 05jun11    a2335 (on 03jun11) sees lbw polB radar compression with long recovery time.
• 05jun11     plotted total power vs time for a2335 data mar11 thru 03jun11
  
• 25may11   a2335 see 1367 Mhz rfi on 18may11 (punta salinas chan 18)
  
• 24may11   added anritsu spectrum analyzer manuals.
  
• 23may11   adjusting stage 3 drain  voltage for alfa  bm1 fixed  bm1a jumps
  
• 20may11   a2130 alfa beam1b caldeflection jumps with 20k stage diode temp.
  
• 18may11   rfi test accurange3000 distomat using 327 rcvr. (data taken 20apr11)
  
• 17may11   Tightening the polA Andrews connector fixed dome 430 polA ripple
  
• 16may11   Most active requestors of naic http daemon jan11-may11
  
• 13may11   compute new td offsets with tilt sensor and az swings.
  
• 12may11   tilt sensor az swings to compute new td positions to level platform.
• 11may11   fractional occurrence of rfi for apr11
• 11may11  Alfa Tsys for the month of apr11
• 11may11   alfalfa (a2010) monitoring of data for month of apr11
• 11may11   ages (a2048) monitoring of data for month of apr11
11may11   alfa stability (using a2010 date) PolA/polB ratios for apr11 -->
• 11may11  tiedown tensions for apr11
• 11may11  azimuth motor torques vs velocity for apr11
• 11may11   testing trelectronics distomat
• 11may11   rfi check during 1999 site power shutdown.. 430 and lband data.
  
• 09may11   testing accurange 3000 distomat replacement 28apr11.
• 05may11  a2130 caldeflection. added 13,14,15 apr11.
  
• 05may11  small jerks in turret motion while rotating.
  
• 05may11  430 dome polA shows irregularities in its bandpass.
  
• 04may11  a2130 caldeflection vs za. beam 4b increases at high za.
  
• 02may11  a2130 galfacts caldeflection shows alfa gain stability.
  
• 01may11  galfa bandpass ripples caused by fiber reflections.
  
• 26apr11   testing averaging of accurange 3000 distomat replacement.
  
• 26apr11   instabilities in alfa beam 1b seen by a2010,a2130,a2048.
  
• 19apr11   refit polynomial for dut1 (utc-ut1) apr11 thru apr12
  
• 15apr11   explain why mock single pix does not support winking cals tied to mock buffers.
  
• 15apr11   rfi testing of compressor monitor system in the screen room.
  
• 08apr11   rfi testing of iLon smartserver 2000 AC controller for buildings 1,2
  
• 07apr11   rfi testing of accurange3000 distomat.
  
• 07apr11   added stokes  calibration 800 rcvr  using 3C138 on 11mar11.
  
• 06apr11  az dependence of 327 rfi (fm stations) data taken 09mar11.
  
• 06apr11   fractional occurrence of rfi for mar11
• 06apr11  Alfa Tsys for the month of mar11
• 06apr11   alfalfa (a2010) monitoring of data for month of mar11
• 06apr11   ages (a2048) monitoring of data for month of mar11
• 06apr11   alfa stability (using a2010 date) PolA/polB ratios for mar11
• 06apr11  tiedown tensions for mar11
• 06apr11  azimuth motor torques vs velocity for mar11
• 04apr11    a2471 cband bursts. Look at stokes I variation various days.
  
• 31mar11   radar intermods in galfa spectrometer.
• 23mar11   mock time domain sampling of 1937+21 at lbw, and 430Mhz.
  
• 22mar11    a2335.. total power plots for some of the mar11 data.
  
• 15mar11   1357.2 Mhz rfi in lbw.
  
• 15mar11   fractional occurrence of rfi for feb11
• 15mar11  Alfa Tsys for the month of feb11
• 15mar11   alfalfa (a2010) monitoring of data for month of feb11
• 15mar11   ages (a2048) monitoring of data for month of feb11
• 15mar11   alfa stability (using a2010 date) PolA/polB ratios for feb11
• 15mar11  tiedown tensions for feb11
• 15mar11  azimuth motor torques vs velocity for feb11
• 14mar11  corrected 800 Mhz az,za offsets in pointing model
  
• 11mar11  added stokes calibration results for 800 Mhz rcvr
  
• 08mar11  800 Mhz rcvr bandpass, rms/mean, and sefd vs freq.
  
• 08mar11  rfi from alfa motor, dome cameras in 800 Mhz rcvr.
  
• 02mar11  327 rfi from:alfa motor controller, dome cameras, distomats.
  
• 02mar11  updated platform cycles to use change in unbalanced moment as definition.
• 28feb11    azswings at 327Mhz while transmitting a tone from the 12 meter.
  
• 25feb11   first look at 12meter rfi from inside the pedestal.
  
• 22feb11   rfi at 2380Mhz goes off when tower transmitter turned off.
• 22feb11   az swings done 19jan11 looking at 2380 Mhz rfi.
  
• 22feb11   completed mosaicing of a2415 430 Mhz maps
  
• 16feb11   alfa beam 2 has a 5.2 sec oscillation from the dewar bias monitoring.
  
• 15feb11   added dds synth page with bill sisk's schematics.
  
• 11feb11   counting the number of cycles performed on the telescope 2004.5 thru 2010
• 11feb11   measuring stability in the cband,iflo receiver with the shutter closed.
  
• 10feb11   fractional occurrence of rfi for jan11
• 10feb11  Alfa Tsys for the month of jan11
• 10feb11   alfalfa (a2010) monitoring of data for month of jan11
• 10feb11   ages (a2048) monitoring of data for month of jan11
• 10feb11   alfa stability (using a2010 date) PolA/polB ratios for jan11
• 10feb11  tiedown tensions for jan11
• 10feb11  azimuth motor torques vs velocity for jan11
• 10feb11   pointing errors after telescope beam reinforcement
  
• 04feb11  servo performance test results from 12meter acceptance test.
  
• 02feb11   pdev voltage sampling on psr0301+19 at 327 and 1410 Mhz
  
• 02feb11   lbw polB baseline ripple seen by a2335.
  
• 20jan11   rfi appears at 2380 Mhz
• 13jan11   fractional occurrence of rfi for dec10
• 13jan11  Alfa Tsys for the month of dec10
• 13jan11   alfalfa (a2010) monitoring of data for month of dec10
• 13jan11   ages (a2048) monitoring of data for month of dec10
• 13jan11  tiedown tensions for dec10
• 13jan11  azimuth motor torques vs velocity for dec10
• 13jan11  2010 yearly plots of wind velocity from platform.
• 13jan11  2010 yearly plots of platform temperature.

2010 (top)

• 15dec10   327 Tsys vs ra,dec and galactic l,b 10may09 thru 13dec10. Plus TsysB-TsysB
  
• 13dec10   az swing shows that 734-740Mhz rfi is stable. FCC block B low 700Mhz Band.
  
• 09dec10    lbw warmup/cooldown cycle on 26/28 oct10 caused jump in Tsys.
  
• 09dec10   reduced 2010 lbw stokes data.
• 08dec10   fractional occurence of rfi for nov10
• 08dec10   Alfa Tsys for the month of nov10
• 08dec10   alfalfa (a2010) monitoring of data for month of nov10
• 08dec10   ages (a2048) monitoring of data for month of nov10
• 08dec10   alfa stability (using a2010 date) PolA/polB ratios for nov10
• 08dec10   tiedown tensions for nov10
• 08dec10   azimuth motor torques vs velocity for nov10
• 07dec10   A2335 low interim correlator power levels did not increase Tsys.
  
• 06dec10   A2335 switching to 750 narrowband IF caused power adjust problems.
• 03dec10   added links to articles showing FCC 700 Mhz plan and auctions
  
• 03dec10   reduced 2008/9 cband stokes data.
• 06dec10   switching to 750 narrowband IF caused power adjust problems.
• 01dec10   added FCC codes for puerto rico
• 29nov10   added cal dipole manual (thanks to dana..)
• 29nov10    azimuth dependence of 800 Mhz rcvr rfi.
  
• 29nov10   hilltop rfi monitoring. added dynamic spectra for last 8 days.
  
• 27nov10   reduced 2009 lbw stokes data.
  
• 24nov10   734.7-739.3 rfi in 800Mhz rcvr.
  
• 23nov10  orion weather station resets accumulated data on 04nov10.
  
• 22nov10  cband Tsys increases when horn gortex fabric  cover comes loose.
  
• 22nov10  pointing errors and 1,2,3 az fits for oct,nov10 after u2-u2l3 beam repair.
  
• 20nov10  a2471 data processed... bursts at cband.
  
• 15nov10  added 46.8 Mhz transmitter control info.
  
• 12nov10  a2584 cband 1 ghz scan data.
  
• 10nov10   fractional occurrence of rfi for oct10
• 10nov10  Alfa Tsys for the month of oct10
• 10nov10   alfalfa (a2010) monitoring of data for month of oct10
• 10nov10   ages (a2048) monitoring of data for month of oct10
• 10nov10   alfa stability (using a2010 date) PolA/polB ratios for oct10
• 10nov10  tiedown tensions for oct10
• 10nov10  azimuth motor torques vs velocity for oct10
• 01nov10 started planetary radar software page.
  
• 26oct10  12 meter communication timing.
  
• 20oct10  scope image of protect turnoff timing for the 430 ch xmter.
  
• 18oct10  tdkips needed to move platform down 1 inch.
  
• 14oct10  plot a2335 data for 01oct10 thru 13oct10
• 11oct10  monitor lbw stability with 3 1800 sec drift scans.
  
• 07oct10  a2335 sees instabilities in polA and polB of lbw.
  
• 09oct10   fractional occurrence of rfi for sep10
• 09oct10  Alfa Tsys for the month of sep10
• 09oct10   alfalfa (a2010) monitoring of data for month of sep10
• 09oct10   ages (a2048) monitoring of data for month of sep10
• 09oct10   alfa stability (using a2010 date) PolA/polB ratios for sep10
• 09oct10  tiedown tensions for sep10
• 09oct10  azimuth motor torques vs velocity for sep10
• 07oct10  430 transmitter transmit pulse timing and constraints.
  
• 06oct10  alfa now included in the daily tsys plots. Also generated pdf files.
  
• 06oct10   430 transmitter: 1 Mhz chirp in tx samples.
  
• 01oct10   checking 1340 birdie after huffman box gasket changed.
  
• 30sep10  a2524 800 Mhz rcvr dps processing shows larger ripple in polA.
  
• 29sep10  4200 second integration lbw to check for stability.
  
• 28sep10  gps l3 on for 26 minutes in a2010 data.
  
• 28sep10  1340 tone coming from radar blanker 1340 Mhz lo.
  
• 28sep10  added td daily check output: position,dac values, rpms, torques.
  
• 27sep10  check stability 430gr receiver. dynamic spectra, avg spc, rms/mean, pwr vs time.
  
• 27sep10  scan lbw bands: dynamic spectra, avg spc, rms/mean and total pwr vs time.
  
• 27sep10  a2415 430 mapping.
• 26sep10  800 Mhz calibration run after reinstallation.
  
• 24sep10  5670 cband rfi 8 mhz wide. telescope and hilltop monitor.
  
• 22sep10  talk living with rfi at AO for puerto rican spectrum users group added.
  
• 22sep10   rfi hilltop monitoring page.. added pictures of equipment on hill.
  
• 19sep10   fractional occurrence of rfi for aug10
• 19sep10  Alfa Tsys for the month of aug10
• 19sep10   alfalfa (a2010) monitoring of data for month of aug10
• 19sep10   ages (a2048) monitoring of data for month of aug10
• 19sep10   alfa stability (using a2010 date) PolA/polB ratios for aug10
• 19sep10  tiedown tensions for aug10
• 19sep10  azimuth motor torques vs velocity for aug10
• 16sep10   mock narrow band spectra showing birdies close to DC.
  
• 14sep10   wapps beam5b jumps in power level (attenuators?)
  
• 10sep10  added platform beam reinforcement page.
  
• 09sep10   a2335 instabilities in lbw polb seen jul10.
  
• 05sep10   added page documenting svn repositories, working directories for code.
  
• 02sep10  byu phased array sensitivty from single dipole. absorber and crosses.
  
• 01sep10   wind at AO during hurrican earl.
  
• 23aug10  byuPhasedAr Beam A0-A6 position errors 19aug10.
• 19aug10   fractional occurrence of rfi for jul10
• 19aug10  Alfa Tsys for the month of jul10
• 19aug10  tiedown tensions for jul10
• 19aug10   ages (a2048) monitoring of data for month of jul10
• 19aug10  azimuth motor torques vs velocity for jul10
• 16aug10  byuPhasedAr Beam A1-A6 position offsets correcting for pointing errors.
  
• 13aug10  added monitoring of pdev hardware: fan, temps,voltages
  
• 11aug10  Mock spectrometer jumps in polA when in hi-res mode.
  
• 08aug10 added page describing pdev spectrometer diagnostics.
  
• 04aug10 430 klystron output of 1Mhz chirped signal.
  
• 08jul10   fractional occurrence of rfi for jun10
• 08jul10  Alfa Tsys for the month of jun10
• 08jul10  tiedown tensions for jun10
• 08jul10   ages (a2048) monitoring of data for month of jun10
• 08jul10  azimuth motor torques vs velocity for jun10
• 01jul10   added page to monitor  pdev hardware (temps,fans,voltages)
  
• 30jun10  added page describing crontab file that makes the daily plots.
  
• 26jun10  added byu phased array page.
  
• 26jun10   updated byu phased array positions in focal plane and on sky.
  
• 09jun10   fixed za sin(3az) typo when installing model updates 04jun10
  
• 08jun10  testing the byu offsets equations using the turret motion.
  
• 06jun10   fractional occurrence of rfi for may10
• 06jun10  Alfa Tsys for the month of may10
• 06jun10   alfalfa (a2010) monitoring of data for month of may10
• 06jun10   alfa stability (using a2010 date) PolA/polB ratios for may10
• 06jun10  tiedown tensions for may10
• 06jun10   ages (a2048) monitoring of data for month of may10
• 06jun10  azimuth motor torques vs velocity for may10
• 04jun10   added plots of position offsets for byu feed in focal plane and on sky.
  
• 04jun10   update pointing models with 1,2,3 az fits to x102 data.
  
• 28may10 a2463. added plots for 27,28may10. listed bands with incorrec freqr 18-2may10
  
• 24may10  spectra jumps at power of 2 channels (23apr10 data)
  
• 24may10  mock spectrometer. test decimations 1-20. power,voltage,jumps,bandpass shape.
  
• 22may10   fractional occurrence of rfi for apr10
• 22may10  Alfa Tsys for the month of apr10
• 22may10   alfalfa (a2010) monitoring of data for month of apr10
• 22may10   alfa stability (using a2010 date) PolA/polB ratios for apr10
• 22may10  tiedown tensions for apr10
• 22may10   ages (a2048) monitoring of data for month of apr10
• 22may10  azimuth motor torques vs velocity for apr10
• 21may10 amman & whitney non-linear analysis of cables ok's cables for full range of motion.
  
• 21may10  a2463  w51 on/off-1
  
• 19may10  a2463 spectral jumps with power of 2 spacing.
  
• 16may10 5.8 magnitude earthquake 34 km from AO. Td tension variation.
  
• 11apr10  added documetation for masdmp,wasdmp to dump mock and wapp aofits files.
  
• 11apr10 added trackingtime routine to compute lst rise,transit,set as well as time in the keyhole
  
• 30apr10  added amman & whitney 29apr10 meeting presentation to limits page.
  
• 30apr10   testing the byumap pointing routine on a 3.5 jy src using lbw.
  
• 27apr10   included plot showing allowable dome za range vs temperature
  
• 27apr10  added 27apr10 stress table from amman & whitney modeling
  
• 24apr10   added time on source for byu sources.
  
• 15apr10   new operational limits for the telescope from ammann and whitney. (added minKips vs za)
• 11apr10   fractional occurrence of rfi for mar10
• 11apr10  Alfa Tsys for the month of mar10
• 11apr10   alfalfa (a2010) monitoring of data for month of mar10
• 11apr10   alfa stability (using a2010 date) PolA/polB ratios for mar10
• 11apr10  tiedown tensions for mar10
• 11apr10  azimuth motor torques vs velocity for mar10
• 04apr10   Cima fixed azimuth drift pattern does not perfom as expected at ao Declination.
  
• 31mar10  updated source tracks by declination to include 1deg steps in za.
  
• 30mar10  computing the unbalanced moments in the azimuth arm.
• 27mar10   rfi with 1.2 hz periodicity in lbw is from the crosshead.
  
• 24mar10   mock single pixel observing specifications.
  
• 19mar10  added linux datataking programs page.
  
• 17mar10  The range of za for dome and ch after repairing the broken beam.
  
• 17mar10   dome za that balances the azimuth arm with ch at stow (8.835)
  
• 16mar10  document aosock command. Socket i/o from tclInter in vxWorks.
  
• 16mar10   fractional occurrence of rfi for feb10
• 16mar10  Alfa Tsys for the month of feb10
• 16mar10  tiedown tensions for feb10
• 16mar10  azimuth motor torques vs velocity for feb10
• 10mar10   tiedown tensions vs az,za, and temp using 08-09 data.
  
• 09mar10  Repair of broken beam on the platform mar2010
  
• 07mar10 Dome weight page.
  
• 28feb10   added aeronomy programs page. clp processing.
• 28feb10   clp computational complexity
  
• 26feb10   added patriot 12 meter telescope page.
  
• 23feb10  byu phased array page.
  
• 22feb10  fit tiedown tensions using 2008,2009 data.
  
• 18feb10  notes for jim gould.
  
• 12feb10   updated network switches to show 10Gbit switches.
  
• 12feb10   fractional occurrence of rfi for jan10
• 12feb10  Alfa Tsys for the month of jan10
• 12feb10   alfalfa (a2010) monitoring of data for month of jan10
• 12feb10   alfa stability (using a2010 date) PolA/polB ratios for jan10
• 12feb10   ages (a2048) monitoring of data for month of jan10
• 12feb10  tiedown tensions for jan10
• 12feb10  azimuth motor torques vs velocity for jan10
• 10feb10  tension in tiedown cables during the 12jan10 haitian quake.
  
• 10feb10  p1693 327 receiver. 3 minute drift scan: dynamic and avg spectra.
  
• 08feb10  Converting positionSwitch data to Kelvins. C348,lwide, and mocks.
  
• 05feb10  dynamic loading of tiedowns from telescope motion.
  
• 03feb10  azimuth motion failures. amplifiers with dc offsets in speed output.
  
• 12jan10  calibration run on BYU 800 MHz antenna
  
• 11jan10   fractional occurrence of rfi for dec09
• 11jan10  Alfa Tsys for the month of dec09
• 11jan10   alfalfa (a2010) monitoring of data for month of dec09
• 11jan10   alfa stability (using a2010 date) PolA/polB ratios for dec09
• 11jan10   ages (a2048) monitoring of data for month of dec09
• 11jan10  tiedown tensions for dec09
• 11jan10  azimuth motor torques vs velocity for dec09
• 11jan10  2009 yearly plots of wind velocity from platform.
• 11jan10  2009 yearly plots of platform temperature.
  

2009 (top)

• 16dec09   Stokes V sign is  flipped if frequency band is inverted.
  
• 16dec09   disc i/o rates for pdevRaid with 5*1.5TB discs.
  
• 13dec09   rms baseline degradation of on,off position switching with position offsets.
  
• 13dec09   fractional occurrence of rfi for nov09
• 13dec09  Alfa Tsys for the month of nov09
• 13dec09   alfalfa (a2010) monitoring of data for month of nov09
• 13dec09   alfa stability (using a2010 date) PolA/polB ratios for nov09
• 13dec09   ages (a2048) monitoring of data for month of nov09
• 13dec09  tiedown tensions for nov09
• 13dec09  azimuth motor torques vs velocity for nov09
• 09dec09   table of radar intermods. added wapp first mixer results.
  
• 30nov09   Alfa outer beam position errors with mock cimafits and psrfits files.
  
• 20nov09   2.5 Mhz oscillations in alfa from bias box.
  
• 19nov09   alfa total power stability with leds on.
  
• 19nov09   alfa recover with the leds installed
  
• 18nov09   fractional occurrence of rfi for oct09
• 18nov09  tiedown tensions for oct09
• 18nov09  azimuth motor torques vs velocity for oct09
• 13nov09   sine wave into echotek card to check timing,frequency.
  
• 10nov09  converting spectrometer counts to kelvins with the cals.
  
• 08nov09  1375 Mhz rfi at lband.
  
• 05nov09  calibration scans alfa with alfa rotation angle measurement.
  
• 01nov09  added nvidia gpu page
  
• 26oct09   rdev coded longpulse data from carriage house. plasmalines.
  
• 21oct09    rdev sine wave test and topside data from 19oct09
  
• 20oct09   average bandpass for 800 Mhz receiver. data:12oct09
  
• 12oct09    added psrfits single pixel test dataffiles  in stokes mode.
  
• 07oct09   cima online gui software. how svn is used to maintain it.
  
• 06oct09   fractional occurrence of rfi for sep09
• 06oct09  Alfa Tsys for the month of sep09
• 06oct09   alfalfa (a2010) monitoring of data for month of jul09
• 06oct09   alfa stability (using a2010 date) PolA/polB ratios for sep09
• 06oct09  tiedown tensions for sep09
• 06oct09  azimuth motor torques vs velocity for sep09
• 01oct09    24sep09 rdev test (tamarra's box) with 430 dome and coded long pulse
  
• 30sep09   added software packages page: fftw, livedata, predict so far.
  
• 28sep09   fftw performance on summer 1 cpu (xeon 5420 dual quadcor)
  
• 17sep09   800Mhz rcvr polB/polA gain,tsys, and sefd ratios jul09->14sep09
  
• 14sep09   11sep09 1390 rdr rfi appears in alfalfa data.
  
• 14sep09   fractional occurrence of rfi for aug09
• 14sep09  Alfa Tsys for the month of aug09
• 14sep09   alfalfa (a2010) monitoring of data for month of jul09
• 14sep09   alfa stability (using a2010 date) PolA/polB ratios for aug09
• 14sep09   ages (a2048) monitoring of data for month of aug09
• 14sep09  tiedown tensions for aug09
• 14sep09  azimuth motor torques vs velocity for aug09
• 07sep09    pdev maintenance procedures: replacing spectrometer box.
  
• 26aug09   aug09 lro 16,17,20,21 aug. positions and Stokes V of lro xmit.
• 25aug09    az dependence tv chn67 after turn off
  
• 24aug09   ran pdev raid disc i/o test.. pdevs6 raid is slow..
  
• 23aug09   fractional occurrence of rfi for jul09
• 23aug09  Alfa Tsys for the month of jul09
• 23aug09   ages (a2048) monitoring of data for month of jul09
• 23aug09  tiedown tensions for jul09
• 23aug09  azimuth motor torques vs velocity for jul09
• 14aug08   800 Mhz cals measured 13aug09 with new Tsys values.
  
• 13aug09   800 Mhz rcvr. tv chan 67 (789.25 Mhz) turns off.
  
• 11aug09   sband console rfi in 327 rcvr fixed 11 jun09.
  
• 10aug09   beam squint in the 800 Mhz rcvr.
  
• 10aug09   a2488 800 Mhz dps shows polB rms > polA rms.
  
• 10aug09   430 dome polA is unstable.
  
• 09aug09  rfi from azimuth encoders.
  
• 08aug09  Azimuth encoder1 errors 27jul09->04aug09
  
• 08aug09   pointing error that occurs during azimuth encoder1 failures
  
• 30jul09   fractional occurrence of rfi for jun09
• 30jul09  Alfa Tsys for the month of jun09
• 30jul09   ages (a2048) monitoring of data for month of jun09
• 30jul09  tiedown tensions for jun09
• 30jul09  azimuth motor torques vs velocity for jun09
• 29jul09   added 800 Mhz rcvr to system performance page.
• 03jul09   800 mhz calibration runs with cooled dewar.
  
• 02jul09   tsys vs freq cband, sbh over entire band.
  
• 29jun09  CalOn,offs. Averaging over the band vs fitting for wide bands.
  
• 18jun09  800 mhz rcvr. freq hop 750/753.7. source of rfi.
  
• 17jun09  800 Mhz rcvr. ripple appears in polB.
  
• 17jun09  mock,pdev minimum integration times vs fftlen
  
• 16jun09  calibration run 800 Mhz rcvr with room temp dewar.
  
• 14jun09  az swing 800 Mhz rcvr looking at 700-800 Mhz.
  
• 13jun09  first look at 800 Mhz feed with tv stations off.
  
• 10jun09   fractional occurrence of rfi for may09
• 10jun09  Alfa Tsys for the month of may09
• 10jun09   alfalfa (a2010) monitoring of data for month of may09
• 10jun09   ages (a2048) monitoring of data for month of may09
• 10jun09  tiedown tensions for may09
• 10jun09  azimuth motor torques vs velocity for may09
• 22may09  pdev raid disc i/o speed page
  
• 16may09  intermods seen in alfa/pdev
  
• 16may09  table of radar intermods created in alfa/pdev
  
• 14may09  rfi from lbw crosshead. data taken 05may09
  
• 10may09   fractional occurrence of rfi for apr09
• 10may09  Alfa Tsys for the month of apr09
• 10may09   alfalfa (a2010) monitoring of data for month of apr09
• 10may09   alfa stability (using a2010 date) PolA/polB ratios for apr09
• 10may09   ages (a2048) monitoring of data for month of apr09
• 10may09  tiedown tensions for apr09
• 10may09  azimuth motor torques vs velocity for apr09
• 08may09   lbw dewar warmup time.
  
• 07may09  Tsys 327 vs sky position jun08 -> may09
  
• 26apr09   rfi that looks like radar in alfa at 1403, 1424, 1475 Mhz..
  
• 24apr09   noise bump at 439 Mhz in 430 dome spectra when Tx Hv on.
  
• 20apr09    visiting committee talk.
  
• 13apr09   2 az swings with 800 Rcvr centered at 820Mhz.
  
• 12apr09   az motor 52 fail at az=326 on 11/12apr09
  
• 11apr09   gps l3 in a2010 data jan09-mar09
  
• 11apr09   low power tv stations seen in the 700-800 Mhz band.
  
• 08apr08   2 azswings with 800 rcv @760Mhz. chan62/50 peak values.
  
• 07apr09   fractional occurrence of rfi for mar09
• 07apr09  Alfa Tsys for the month of mar09
• 07apr09   alfalfa (a2010) monitoring of data for month of mar09
• 07apr09   alfa stability (using a2010 date) PolA/polB ratios for mar09
• 07apr09   ages (a2048) monitoring of data for month of mar09
• 07apr09  tiedown tensions for mar09
• 07apr09  azimuth motor torques vs velocity for mar09
• 06apr09    p2445 reports unstable power levels when using the 430 Mhz receiver
  
• 06apr09    430 dome spectrum at output of the dewar.
  
• 03apr09    azswings looking for birdies at 430 Mhz.
  
• 02apr09    planned usage of the 700 MHz band by emergency services.
  
• 20mar09    1422.5 Mhz birdie from channel 54.
  
• 19mar09   GPS L2, GLONASS L2, and compass E6 rfi in 1200-1300 MHz.
  
• 17mar08   1384,1424 birdies/tones seen in alfa.
  
• 11mar09   4.7 magnitude earthquake caused tension in td8 to vary.
  
• 10mar09   collect gps info/measurements to a single page.
  
• 10mar09  Gain vs frequency. Surface errors from the ruze curves.
  
• 10mar09   fractional occurrence of rfi for feb09
• 10mar09  Alfa Tsys for the month of feb09
• 10mar09   alfalfa (a2010) monitoring of data for month of feb09
• 10mar09   alfa stability (using a2010 date) PolA/polB ratios for feb09
• 10mar09   ages (a2048) monitoring of data for month of feb09
• 10mar09  tiedown tensions for feb09
• 10mar09  azimuth motor torques vs velocity for feb09
• 09mar09  telescope performance and datataking. ausac09 ppt presentation.
  
• 05mar09  updates to sband transmitter page.
  
• 01mar09 1385 Mhz birdie in alfa from aerostat. data from 22-23feb09.
  
• 23feb09  added page with psrfits datafiles that have been taken for testing.
  
• 23feb09   pdevs1. run scp while taking data to see %cpu used.
  
• 22feb09   added alfa monitoring of dewar temps,drainV,drainI,gateV
  
• 20feb09   arecibo radio telescope talk for  teachers workshop.
  
• 18feb09   s2462 sband radar test 30jan09 with satellite orbiting the moon.
  
• 16feb09   pdev group 0,group 1 power ratios after 1db pads installed.
  
• 08feb09   fractional occurrence of rfi for jan09
• 08feb09  Alfa Tsys for the month of jan09
• 08feb09   alfalfa (a2010) monitoring of data for month of jan09
• 08feb09   alfa stability (using a2010 date) PolA/polB ratios for jan09
• 08feb09   ages (a2048) monitoring of data for month of jan09
• 08feb09  tiedown tensions for jan09
• 08feb09  azimuth motor torques vs velocity for jan09
• 04feb09   spectral scans with 800 Mhz rfi feed taken 18dec08
  
• 27jan09   psrfits2fil: convert pdev psrfits format to sigproc filterbank format.
  
• 20jan09   locations for 1db pads in pdev to equalize grp0,grp1 power levels.
  
• 20jan09   added some documentation on pdev adjusting the power levels.
  
• 18jan09    gpsL3 test baseband data taken 23sep08.
  
• 16jan09   fractional occurrence of rfi for dec08
• 16jan09  Alfa Tsys for the month of dec08
• 16jan09   alfalfa (a2010) monitoring of data for month of dec08
• 16jan09   alfa stability (using a2010 date) PolA/polB ratios for dec08
• 16jan09   ages (a2048) monitoring of data for month of dec08
• 16jan09  tiedown tensions for dec08
• 16jan09  azimuth motor torques vs velocity for dec08
• 14jan09   updated info on alfa motor controller page.

2008  (top)

• 16dec08   instructions for daily compressing of a2130 (galfacts) data.
  
• 15dec08    lbw cals remeasured 08dec08. installed 15dec08
  
• 14dec08   fractional occurrence of rfi for nov08
• 14dec08  Alfa Tsys for the month of nov08
• 14dec08   alfalfa (a2010) monitoring of data for month of nov08
• 14dec08   alfa stability (using a2010 date) PolA/polB ratios for nov08
• 14dec08   ages (a2048) monitoring of data for month of nov08
• 14dec08  tiedown tensions for nov08
• 14dec08  azimuth motor torques vs velocity for nov08
• 12dec08   update utc-ut1 for  leap second on 01jan09
  
• 10dec08   gregorian motor torques during galfacts scanning
  
• 07dec08   monitoring pdevsN server cpu/disc with iostat.
  
• 05dec08   pdev spectrometer: setting the registers for 16 bit sampling.
• 02dec08    pdev  running galfacts can't keep up data rate at 65 Mb/sec.
  
• 27nov08   trying to remove the 1400Mhz lbw resonance in software
  
• 19nov08    a2130 .. added list of files recorded..
  
• 18nov08   pdev winking cal occasionally starts with a phase offset.
  
• 18nov08   a2130 galfacts survey project page. info about files,compression..
  
• 09nov08   fractional occurrence of rfi for oct08
• 09nov08  Alfa Tsys for the month of oct08
• 09nov08   alfalfa (a2010) monitoring of data for month of oct08
• 09nov08   alfa stability (using a2010 date) PolA/polB ratios for oct08
• 09nov08   ages (a2048) monitoring of data for month of oct08
• 09nov08  tiedown tensions for oct08
• 09nov08  azimuth motor torques vs velocity for oct08
• 30oct08   Check how clean 839 Mhz is using hilltop monitoring data for oct08.
• 28oct08   wide spectral variations in upper half of ch band.
• 06oct08   fractional occurrence of rfi for sep08
• 06oct08  Alfa Tsys for the month of sep08
• 06oct08   alfalfa (a2010) monitoring of data for month of sep08
• 06oct08   alfa stability (using a2010 date) PolA/polB ratios for sep08
• 06oct08   ages (a2048) monitoring of data for month of sep08
• 06oct08  tiedown tensions for sep08
• 06oct08  azimuth motor torques vs velocity for sep08
• 01oct08   psrfits test program to time cfitsio i/o rates.
  
• 29sep08   sbw cal values updaed from 26sep08 cal measurements.
  
• 26sep08   lbw cals updated from 26sep08 cal measurements.
  
• 26sep08   alfa long recovery times vs alfa rotation angle. data taken 24sep08.
  
• 24sep08   pdev adc blanking of faa, remy 1290 radar. az=180, za=17 to 17.5
  
• 23sep08   alfa long recovery times after bias changes (on sky)
  
• 21sep08   check alfa stability after bias voltages changed.
  
• 18sep08   added idl routines for satellite predection at AO.
  
• 18sep08   alfa long recovery. modify 3a bias board. Change V,I bias for 3A and 3B
  
• 16sep08   alfa long recovery. Remove zener 3b, amp3 bias circuit. Modify Vd,I
  
• 16sep08   picture showing alfa, pdev layout.
  
• 12sep08   Modifying the bias currents with pulsed noise into the alfa horn.
  
• 05sep08   az strips with the 800 Mhz rfi feed looking for turret position.
  
• 05sep08   fractional occurrence of rfi for aug08
• 05sep08  Alfa Tsys for the month of aug08
• 05sep08   alfalfa (a2010) monitoring of data for month of aug08
• 05sep08   alfa stability (using a2010 date) PolA/polB ratios for aug08
• 05sep08   ages (a2048) monitoring of data for month of aug08
• 05sep08  tiedown tensions for aug08
• 05sep08  azimuth motor torques vs velocity for aug08
• 04sep08   22-28aug08 gps sv26 flies thru beam during proj a2010.
  
• 02sep08    measure pdev pfb overflow vs a/d rms and fftlen using a sine wave input.
  
• 29aug08   lbw cal values meaured and installed.
  
• 28aug08   fractional occurrence of rfi for jul08
• 28aug08  Alfa Tsys for the month of jul08
• 28aug08   ages (a2048) monitoring of data for month of jul08
• 28aug08  tiedown tensions for jul08
• 28aug08  azimuth motor torques vs velocity for jul08
• 27aug08  Pulsed noise into alfa horn shows long recovery is in dewar.
  
• 16jul08    tsys 327 vs date,hr,ra,dec
  
• 10jul08    pdev spectral  bandpass shape and spectral jumps with low a/drms
  
• 04jul08   fractional occurrence of rfi for jun08
• 04jul08   Alfa Tsys for the month of jun08
• 04jul08   ages (a2048) monitoring of data for month of jun08
• 04jul08   tiedown tensions for jun08
• 04jul08   azimuth motor torques vs velocity for jun08
• 02jul08    lbw cooldowns.. omt stage not getting below 180K
  
• 25jun08   faa radar cause pdev a/d to overflow causing spectral artifacts.
  
• 25jun08   intermods/harmonics created when clipping a sine wave.
  
• 24jun08   modeling the faa radar total power period for pulsar observers.
  
• 24jun08   pdev spectrometer added list of datafiles taken by month.
  
• 23jun08   added tiedown loadcell locations and serial numbers.
  
• 23jun08    SEFDA/SEFDB for 327 rcvr shows TsysB/TSYSA=1.1
  
• 23jun08   added 327 dewar to receiver monitoring.
  
• 23jun08   11jun08 mot82 azTq reads nonzero when power off.
  
• 22jun08   fit 1az, 3az term to pointing runs to update model.
  
• 19jun08   pdev take 12 secs of data with galfacts setup (sitting 270,10).
  
• 15jun08   pdev time domain sampling does not have an 8bytes record header.
  
• 14jan08   pdev spectrometer specifications.
  
• 13jun08   added cal values for 327 cooled receiver.
  
• 13jun08   pdev spectrometer. spectral bandpass, rms  vs Ashift param for 16 bit sampling.
  
• 12jun08   more a1300 calibrate oh spectra for tom..
• 10jun08   fractional occurrence of rfi for may08
• 10jun08   Alfa Tsys for the month of may08
• 10jun08   alfalfa (a2010) monitoring of data for month of may08
• 10jun08   ages (a2048) monitoring of data for month of may08
• 10jun08   alfa stability (using a2010 date) PolA/polB ratios for may08
• 10jun08   tiedown tensions for may08
• 10jun08   azimuth motor torques vs velocity for may08
• 09jun08    td 12 encoder interface board fails from lightning strike.
  
• 09jun08    added system performance by month page.
  
• 08jun08    started page with pdev fpga code
  
• 06jun08    added pdev link from home page
  
• 30may08   a1300 calibrate oh spectra for tom..
  
• 29may08   tiedown positions during the painting project.
  
• 24may08  platform, tiedown motion during vlbi cal scan 15may08
  
• 21may08   x102 run output from 20may08 cband.
  
• 19may08   a2327 dataprocessing.
  
• 16may08     process a2228 xband data looking for O2. check xband stability.
  
• 05may08    fractional occurrence of rfi for apr08
  
• 05may08   Alfa Tsys for the month of apr08
  
• 05may08   alfalfa (a2010) monitoring of data for month of apr08
• 05may08   ages (a2048) monitoring of data for month of apr08
  
• 05may08   alfa stability (using a2010 date) PolA/polB ratios for apr08
  
• 05may08   tiedown tensions for apr08
  
• 05may08   azimuth motor torques vs velocity for apr08
  
• 03may08  pdev spectral bandpass and rms vs ashift parameter for 8 and 16 bit packing.
  
• 02may08  gain and bandpass shape of the digital low pass filters of pdev.
  
• 02may08  a2390.. hi cal not firing at end of scan.
  
• 01may08   when faa radar broadcasts at 1330,1350.. 2008 thru april
  
• 26apr08   bbmixer compression levels from a sine wave input.
  
• 24apr08   pdev A/D rms values vs mixerGain and compression levels. On sky and noisesrc.
  
• 22apr08   lbw polb is noisier than polA.
  
• 21apr08   pnetctl information
  
• 08apr08   07apr08 td 8 stops moving. commandvel=0 and level jmps in torque readback.
  
• 06apr08    fractional occurrence of rfi for mar08
  
• 06apr08   Alfa Tsys for the month of mar08
  
• 06apr08   alfalfa (a2010) monitoring of data for month of mar08
• 06apr08    ages (a2048) monitoring of data for month of mar08
  
• 06apr08   alfa stability (using a2010 date) PolA/polB ratios for mar08
  
• 06apr08   tiedown tensions for mar08
  
• 06apr08   azimuth motor torques vs velocity for mar08
  
• 05apr07   pulsed power injected into alfa down converted to  see long revcovery times.
  
• 05apr08   alfa if/lo system
  
• 25mar08   The za locations were alfa power jumps occur when at the meridian.
  
• 25mar08   alfa power jumps with long recovery times using pdev
  
• 17mar08   pdev spectral bandpass shape vs A/D input level and PSHIFTvalue.
  
• 14mar08   pdev bbm signal levels. Injecting a sine wave at the bbm input.
  
• 14mar08   input signal levels to generate a full scale a/d output for pdev.
  
• 10mar08   alfa power jump and long recovery time from radars using pdev.
  
• 09mar08    fractional occurrence of rfi for jan08,feb08
  
• 09mar08   Alfa Tsys for the months jan08,feb08
  
• 09mar08    alfalfa (a2010) monitoring of data for month of jan08,feb08
• 09mar08    ages (a2048) monitoring of data for month of jan08,feb089
  
• 09mar08    alfa stability (using a2010 date) PolA/polB ratios for jan08,feb08
  
• 09mar08   updated system performance page for jan08,feb08
  
• 08mar08   rdev filter shapes with 17 and 11 db roll off coefficients.
  
• 21feb08   az motor torques for motor group 1 and motor group 2.
  
• 20feb08   Added iflo block diagrams.
  
• 07feb08   check lbw sefdpolA/sefdPolB after adjusting the dewar biases.
  
• 06feb08   first start at params needed to config pdev from cima.
  
• 06feb08   az motor torques after amplifier pots adjusted.
  
• 05feb08   check lbw polB Tsys using sefd taken 18dec07
  
• 05feb08   spread in az motor torques jan08.
  
• 04feb08   added monthly monitoring of azimuth motor torques.
  
• 04feb08   added jon hagens vertex memos.
  
• 04feb08   check td12 after adjusting the current limit on amp.
  
• 21jan08   added table of filter programs to make ascii dumps of data and monitor files.
  
• 18jan08   pointing model gradients
  
• 18jan08   td 12 has been stopping off and on. Torque limit set too low.
  
• 11jan08   fractional occurrence of rfi for dec07
  
• 11jan08    Alfa Tsys for the month of dec07
• 11jan08    updated system performance page for dec07
• 11jan08   updated wind monitor page with yr 2007 summary
• 11jan08   updated platform temp page with yr 2007 summary
  
• 11jan08   added temperature sensor page in hardware devices.
  
• 09jan08  vertex motor, amp, compboard settings.
  

2007  (top)

• 16dec07   pointing model 17 after the painting project.
  
• 15dec07   status recommissioning telescope after the painting..
• 11dec07   plotted az motor torques from az swings. Motor 81's torque is too high.
  
• 11dec07   az bending errors.
• 10dec07   Moved td ref position using 10dec07 data then redid az swing to check 1az term.
• 10dec07  az swings measuring platform tilt.
  
• 09dec07  equalizing the tiedown positions after removing the lead in the platform corners.
  
• 07dec07   remeasure platform tilt using tilt sensors after adjusting with 06dec07 data.
  
• 06dec07   measure platform tilt with tilt sensors after painting with current td positions.
  
• 04dec07  more updates on aofits header.
• 27nov07  refit dut1 (utc-ut1) using data 27nov07 to 22nov08.
  
• 26nov07  notes on aofits header.
  
• 16nov07  added ntp entry to hardware page to keep track of ntpd measurements.
  
• 30oct07   pdev mixer i,q phase relation. added loband data with lo at 205 and 215
  
• 19oct07   added platform motions page to group all the platform motion measurements.
  
• 12oct07   setting the gain levels in the pdev spectrometer.
• 11oct07   simulating the fir portion of the polyphase filter bank for pdev.
  
• 10oct07   checking spectral output vs pdev dshift param.
  
• 01oct07   converting spectrum back to rms volts (notes to myself)
  
• 28sep07   simulating the gain of the digital low pass filters.
  
• 26sep07   bump in center of bandpass from mixture chassis stable in time.
  
• 26sep07   location of noise rms bits in DLPF processing (setting hr_shift).
  
• 20sep07   spectral increase +/- 3 MHz about center is gain related.
  
• 19sep07   noise spectra with and without the mixer chassis.
  
• 18sep07    pdev mixer bandpass using noise source.
  
• 29aug07   testing time domain dumping on the pdev spectrometer.
  
• 23aug07   monitor programs: montel, monpnt, montie, etc.. now run on linux
  
• 06aug07   Added how jmocks routines start,run, stop in pdev software documentation.
  
• 06aug07    recomputed lbw stokes plots using carl's latest and greatest fix.
  
• 04aug07    added software page for pdev software. What i'm doing and how to rebuild jeffs system.
  
• 04jul07   Pdev device. Looking at birdies close to dc with radar fpga (with 25Mhz filter).
  
• 01jul07    first look at pdev mixer chassis bandpass shape.
  
• 29jun07    computed stokes calibration data lbw for jan2006->jun07
  
• 21jun07   pdev accpetance testing. Updated with interim correlator comparison. Include on/off spectra.
  
• 14jun07    pdev acceptance testing. included the rest of the boxes. added rms vs integration time.
  
• 12jun07   pdev acceptance testing .. include longer integrations.
  
• 11jun07   p1978 wapp pulsar polarization runs but 2 rather than 1 diodes used.
  
• 06jun07    acceptance testing the spectrometer boxes.
  
• 09may07   Strong 60 hz seen in the 327 receiver 15apr07 to 03may07.
  
• 07may07    fractional occurrence of rfi for apr07
• 07may07    Alfa Tsys for the month of mar07
• 07may07    alfalfa (a2010) monitoring of data for month of apr07
• 07may07    alfa stability (using a2010 date) PolA/polB ratios for apr07
• 07may07    ages (a2048) monitoring of data for month of apr07.
• 07may07    updated system performance page for apr07
• 03may07  modeling the azimuth pointing errors.
  
• 02may07   recomputed the azimuth encoder runout (with a simpler method).
  
• 28apr07    frequency spectrum (cycles in 360 degrees) for the az encoder runout data.
  
• 26apr07    24apr07 pointing checks with sbn.
• 25apr07    added pdev spectrometer idl routines for testing
• 25apr07    added rdev radar processor routines for testing.
  
• 24apr07    23apr07 pointing checks with sbn.
• 22apr07    polA resonance lbw at 1400 Mhz gone after omt bolts tightened. PolB at 1395 still there.
  
• 22apr07    21apr07 pointing checks with sbn.
• 21apr07    20apr07 pointing checks with sbn.
• 21apr07    19apr07 pointing checks with sbn.
• 19apr07     included wind monitoring for the previous week.
• 19apr07    18apr07 pointing checks with sbn.
• 18apr07     What happens to the dome when we move the ch from 2 to 20 degs za.
  
• 18apr07    17apr07 pointing checks with sbn after alfa lowered.
• 18apr07    13apr07 pointing checks with sbn.
• 18apr07     plot focus curves feb03 and 2006 .
• 15apr07     The rotation angle on the sky when we rotate the platform.
  
• 13apr07     07apr07 tilt sensor azswings, adjust td's, after lead removed from corner 12.
• 13apr07    1330/1350 faa radar ipps back to normal sequence.
  
• 13apr07     07apr07 tilt sensor az swings and then readjustment of the tiedown reference.
  
• 13apr07     04apr07 tilt sensor azswings, adjust td's, more azswings after lead removed.
  
• 12apr07    12apr07 pointing checks with sbn.
• 12apr07    09apr07 pointing checks with lbw after installation in dome.
• 12apr07    11apr07 pointing checks.
• 12apr07    1330/1350 faa radar ipps jump by  9 useconds.
  
• 11apr07    10apr07 pointing checks.
• 11apr07    azimuth encoder 1 failed twice in the morning.
  
• 09apr07    encoder 1 fault 08apr07. eventually reset by power dip.
• 08apr07    07apr07 pointing checks after tiedowns reset to correct for weight removed from corner 12.
• 08apr07    05_06apr07 pointing checks after azimuth encoders reset.
• 07apr07    04apr07 dome local disable cable breaks. Both azimuth encoders reset.
• 06apr07    04apr07 pointing check after tiedown positions moved.
• 03apr07    radar seen 28mar07 in the serendip 5 spectrometer using alfa.
• 03apr07    02apr07 pointing checks after half the lead from corner 4 lowered.
• 02apr07    01apr07 pointing checks.
• 02apr07    fractional occurrence of rfi for mar07
• 02apr07    Alfa Tsys for the month of mar07
• 02apr07    alfalfa (a2010) monitoring of data for month of mar07
• 02apr07    alfa stability (using a2010 date) PolA/polB ratios for mar07
• 02apr07    updated system performance page for mar07
• 31mar07    31mar07 pointing checks after laser shack removed.
• 31mar07    tilt sensor az swings after laser shack removed.
• 31mar07    30mar07 pointing checks.
• 30mar07    tilt sensor az swings showing 1,3az terms prior to painting project.
• 29mar07    pointing checks before painting project started
• 08mar07    bad cable wapp 4 brd1 polB (alfa 6B) causes jumps in the gain
• 08mar07    fractional occurrence of rfi for feb07
• 08mar07    Alfa Tsys for the month of feb07
• 08mar07    alfalfa (a2010) monitoring of data for month of feb07
• 08mar07    alfa stability (using a2010 date) PolA/polB ratios for feb07
• 08mar07    updated system performance page for feb07
• 07mar07    added monthly monitoring of AGES a2048 alfa data.
• 06mar07    a2125 continuum mapping at 430 Mhz.
• 05mar07    when the faa radar transmits at 1330 and 1350 Mhz
• 05mar07  Added the faa radar page to the rfi pages.
• 19feb07    lbw beam maps computer from the calibration scans.
• 19feb07    amplifier 21,22 of dome going not ready.
• 17feb07    telescope performance talk for feb07 visiting committe.
• 13feb07    lbw sefd around 1100 Mhz with some rfi plots.
• 09feb07    refit alfa tsys using cal data 01jan05 thru 31jan07.
• 07feb07    gps l3 test on 06dec06 in the a2010 data.
• 06feb07    fractional occurrence of rfi for jan07
• 06feb07    Alfa Tsys for the month of jan07
• 06feb07    alfalfa (a2010) monitoring of data for month of jan07
• 06feb07    alfa stability (using a2010 date) PolA/polB ratios for jan07
• 06feb07    updated system performance page for jan07
• 02feb07    First look at the faa radar with the pdev spectrometer.
• 02feb07    measuring where the pdev specrometer satures (pfb sat.)
• 31jan07    if2 noise source test of pdev spectrometer. Include rms vs integration time.
• 23jan07    2 minute on/offs with pdev (jeffmocks new spectrometer)
• 20jan07    system performance page: llimit to 2000 pnts,.pdf files added, old data moved to separate page.
• 18jan07    added ao network switch contents.
• 12jan07    Platform temperature yearly summary plots for 2006.
• 12jan07    Windmeter yearly summary plots for 2006.
• 12jan07    fractional occurrence of rfi for dec06
• 12jan07    Alfa Tsys for the month of dec06
• 12jan07    alfalfa (a2010) monitoring of data for month of dec06
• 12jan07    alfa stability (using a2010 date) PolA/polB ratios for dec06
• 12jan07    updated system performance page for dec06




2006   (top)
 

• 14dec06    large birdies at 418.625 and 419.2 Mhz.
• 11dec06    update the pointing models for sin(za) and 1 az terms.
• 10dec06    fit new value for UT1-UTC (dec06 thru  jun07).
• 06dec06    4 az swings with tilt sensors at za=10 to measure platform residual tilt.
• 06dec06   Updated angle of tilt sensor on the rotary floor for data taken: 2005,2006.
• 05dec06    fractional occurrence of rfi for nov06
• 05dec06    Alfa Tsys for the month of nov06
• 05nov06    alfalfa (a2010) monitoring of data for month of nov06
• 05dec06    alfa stability (using a2010 date) PolA/polB ratios for nov06
• 05dec06    updated system performance page for nov06
• 28nov06    check the linearity of the programmable gain in the downstairs IFLO.
• 28nov06    pointing checks nov06 after az encoder error.
• 22nov06    a2125 430Mhz continuum maps of the individual fields.
• 21nov06    How well was encoder 1 realigned after the 14nov06 encoder failure.
• 12nov06    beam1a of alfa is noiser than the other beams.
• 07nov06    fractional occurrence of rfi for oct06
• 07nov06    Alfa Tsys for the month of oct06
• 07nov06    alfalfa (a2010) monitoring of data for month of oct06
• 07nov06    alfa stability (using a2010 date) PolA/polB ratios for oct06
• 07nov06    updated system performance page for oct06
• 31oct06    cable test lbw in upstairs iflo shows loose cables in 750 mixer chassis.
• 28oct06    az Encoder board failure 14oct06.
• 18oct06    looking at the rfi from the axis web camera.
• 12oct06    Dewar monitor failure was the upstairs ethernet repeater.
• 12oct06    added dewar monitoring hardware page.
• 09oct06    compare 614 khz comb strength with new and old encoders.
• 09oct06    added az,za encoder page. Include comb at 430 Mhz.
• 05oct06    az,za, time dependence of the 614 khz comb in 327.
• 04oct06    614 Khz comb in 327 Mhz reciever.
• 03oct06    added 327 birdies with azimuth dependence to the rfi frequency list.
• 03oct06    fractional occurrence of rfi for sep06
• 03oct06    Alfa Tsys for the month of sep06
• 03oct06    alfalfa (a2010) monitoring of data for month of sep06
• 03oct06    alfa stability (using a2010 date) PolA/polB ratios for sep06
• 03oct06    updated system performance page for sep06
• 29sep06    added alfa stablity, jan06 thru jun06.
• 28sep06    added alfa stablity page. Used a2010 data and ratio Pola/PolB added months aug06,sep06
• 25sep06    12 second radar at 1378 Mhz appears for 430 seconds on 05sep06
• 24sep06    fractional occurrence of rfi for aug06
• 24sep06    Alfa Tsys for the month of aug06
• 24sep06    alfalfa (a2010) monitoring of data for month of aug06
• 24sep06    updated system performance page for aug06
• 31aug06    new lbw cal values installed. measured 06jul06.
• 30aug06    cable sag measurements .. added avg td tensions.
• 29aug06    new cband cal values installed. Measured 06jul06.
• 24aug06   test the rf monitor at the visitors center with the  430 transmitters.
• 20aug06    Added daily monitor of tiedown tensions.
• 17aug06    430 Dome. Fit antenna gain vs frequency.
• 12aug06    check 430yagi performance after the feed was moved closer to the linefeed.
• 09aug06    noise/gain stability 4-6 ghz mmic, cbh using sqLaw det. and wapps
• 06aug06    fractional occurrence of rfi for jul06
• 06aug06    Alfa Tsys for the month of jul06
• 06aug06    alfalfa (a2010) monitoring of data for month of jul06
• 03aug06  test stability of mmic amp in cryo lab. also check cbh and noise src.
• 30jul06    test stability of mmic amp in cryo lab.
• 27jul06    added punta salinas radar page.
• 22jul06    punta salinas radar blanking test.
• 18jul06    az,za dependence of rfi using transmitted birdies.
• 17jul06    1200 Mhz  narrow birdie.
• 14jul06    1188 Mhz birdie, 66 Mhz comb from kronos timecard reader.
• 13jul06    cat walk weight survey by felipe soberal
• 13jul06    added lbw sefd fits Mar03 thru jun06.
• 13jul06    added sefd page for receivers
• 13jul06    added sefd description page
• 10jul06    birdie near 1320 Mhz.
• 07jul06    az,za position and tiedown tensions during main cable sag measurements (mar06)
• 05jul06    fractional occurrence of rfi for jun06
• 05jul06    Alfa Tsys for the month of jun06
• 05jul06    alfalfa (a2010) monitoring of data for month of jun06
• 29jun06    updated system performance page for may06
• 29jun06    alfalfa (a2010) monitoring of data for month of may06
• 29jun06    Alfa Tsys for the month of may06
• 29jun06    fractional occurrence of rfi for may06
• 02jun06    430 yagi jumps are the rfi birdies with 1 minute periodicity
• 01jun06    System performance 430 yagi after capacitor repaired.
• 24may06    moved 430 yagi  info from 430ch page to its own page.
• 12may06    Compare the focus curves for the old and new sb tx horn.
• 12may06    sband tx focus curve after the new horn was installed.
• 11may06  fractional occurrence of rfi for apr06
• 11may06    distomat birdies after the windows changed (corrected distomat numbering).
• 10may06    a1731 looking at the processe datamap,beammap, and uvdata.
• 07may06    performance of new sband tx horn.
• 03may06    distomat birdies after the windows were changed (data taken 07apr06)
• 03may06    updated system performance page for apr06
• 03may06    alfalfa (a2010) monitoring of data for month of apr06
• 03may06    Alfa Tsys for the month of apr06
• 28apr06    sband tx focus curve before the new horn was installed.
• 27apr06    focus curve using sbn rcv on J0745+101 (taken 25apr06).
• 26apr06    trendata ethernet switch rfi with and without fiber active.
• 21apr06    one of alfa's refrigerators fails on 18apr06.
• 21apr06    td12 startup trouble was digital i/o signal conditioning board
• 19apr06    the 750,40 Khz combs in 327 receiver coming from sband console in dome.
• 16apr06    750 Khz and 39.45 Khz combs in 327 receiver.
• 15apr06    testing the trenddata gigabit switch for rfi.
• 13apr06    added a2127 Xband data for 08mar06 and 03apr06.
• 11apr06    sbn cals meausured at 2380 and 2280..
• 11apr06    stokes calibration sbn new cals using 3C138. data daken 17feb06
• 09apr06   430 ch yagi performance after latest move.
• 08apr06    mars express quick look.
• 06apr06    updated my rfi page. Moved things from my home page to here.
• 05apr06    ntp time jumps on the wapps 2003-2006. What was causing them.
• 03apr06    added things to check when configuring a linux kernel for datataking.
• 03apr06    When the ntpd on aeron lost sync 2003-2006.
• 03apr06    updated system performance page for mar06
• 03apr06    alfalfa (a2010) monitoring of data for month of mar06
• 02apr06    fractional occurrence of rfi for mar06
• 01apr06    Alfa Tsys for the month of mar06
• 01apr06    echotek configuration causes i,q samples to not have a 90deg phase difference.
• 29mar06    Document vxWorks programs by vme crate.
• 28mar06    look at new Ac units. compare with older units to see if comb is gone.
• 27mar06    added radar decoding explanation to my notes.
• 19mar06    linefeed, yagi overlap at 100 km.
• 16mar06    A description of tiedown a/d signals
• 16mar06    td 12 does not always start up when it is commaned to.
• 14mar06    Start mechincal oscillations page.
• 14mar06    Azimuth encoder difference and the az encoder rack gear.
• 13mar06    total power oscillations while tracking the crab at cbh.
• 09mar06    Measure tsys for the 9 filters of lbw.
• 08mar06    Az encoder 2 (ch side) jumps.
• 07mar06    lbw cal polB . tapping on cables external to dewar to not change cal.
• 07mar06    lbw 1230-1470 filter look to see if Tsys changes as we switch it in /out.
• 07mar06    The jun05 warmup/cooldown of lbw actually caused resonances in polA and polB.
• 04mar06    lbw reran stokes analysis for dec05,jan06,feb06 to use new cal values.
• 04mar06    Alfa Tsys for the month of feb06
• 04mar06    fractional occurrence of rfi for feb06
• 04mar06    alfalfa (a2010) monitoring of data for month of feb06
• 03mar06    td 12 releases for 10 minutes.
• 03mar06   added idl routines to look at tiedown data.
• 02mar06   metmon: idl routine to monitor meteors. added positioning cabability
• 01mar06   added accessing the cal values page:
• 28feb06    remeasured lbw cal values after 04dec06 polB jump.
• 28feb06    lbw polB cal value jumps by 20% on 04dec05.
• 24feb06    Harmonics created in the alfa/wapp receiver with cfr=1385.
• 24feb06    added idl routine alfawappharm to compute location of harmonics in alfa/wapp.
• 17feb06    Added Ao serverlist.
• 15feb06    tried to make the different receiver pages a little more similar.
• 15feb06    put 430 dome cals in cals page (these values were measured back in 2001).
• 08feb06    Added yearly summary plots of windmeter data.
• 07feb06    The radar blanker multiplexor (calixto's box) needs to be worked on.
• 05feb06    Daily, yearly platform temperatures now on web.
• 04feb06    Daily windmeter data now on web.
• 03feb06    fractional occurrence of rfi for jan06
• 03feb06    alfalfa (a2010) monitoring of data for month of jan06
• 03feb06    Alfa Tsys for the month of jan06
• 03feb06    updated system performance page for jan06
• 01feb06    Added monitoring of wind meter data.
• 28jan06     check the azimuth encoder offset after the nov05 failure.
• 24jan06    47 Mhz On, off 3C348.0 (Hercules A) Tsys,gain,Beamwidth,sefd
• 24jan05    A first look at the 47 Mhz bandpass, dynamic spectra, rfi.
• 21jan06   rms voltage for optimum sampling with 2,3,4, and 5 bits.
• 18jan06    check the calibration source fluxes.
• 17jan06   compression in the alfa receiver with the 100 Mhz filter installed.
• 16jan06    28oct05 az swings with 327 showed birdies with 1 minute periodicities.
• 15jan06    wide band look at ac dome birdies in 327 Mhz reciever.
• 14jan06    3rd harmonics of fm stations in 327 receiver.
• 13jan06    placing a hipass and bandpass filter before the 327Rcvr first amp.
• 13jan06    check xband receiver after testing in lab.
• 11jan06    re arranged the rfi measurements page (might have broken some links??)
• 10jan06    1 Mhz comb of Ac units in dome also seen in 430 Mhz rcvr.
• 09jan06    26dec05 lbw no power polB for 1 file (probably downstairs iflo problem).
• 09jan06    added links to vanvleck correction papers: fred schwab, kulkarni/heiles.
• 05jan06    Alfa Tsys for the month of dec05
• 05jan06    fractional occurrence of rfi for dec05.
• 05jan06    alfalfa (a2010) monitoring of data for month of dec05
• 05jan06    updated system performance page for dec05

2005   (top)
• 14dec05    Instructions for crossing midnight at the end of the year.
• 13dec05    Started adding list of combs to the rfi freq list page.
• 12dec05    9 level correction problem with wapp pulsar folding.
• 07dec05    fractional occurrence of rfi for nov05.
• 07dec05    alfalfa (a2010) monitoring of data for month of nov05
• 07dec05    Alfa Tsys for the month of nov05
• 06nov05    updated system performance page for nov05
• 05dec05    430 Mhz birdies with 1 minute periodicity.
• 01dec05    bits used in the hp3488 digital output device for the downstairs IF2.
• 26nov05  trouble with lbw polB filter 3 (1230-1470 Mhz).
• 22oct05    gain curves of all recievers. updated the cband gain curve, added 327.
• 22oct05    cband gain curves fit to data may05-oct05.
• 22oct05    cband system performance used for gain curve fits
• 21nov05   performance of mathews 430 test feed with cals installed.
• 05nov05    The azimuth dependence of birdies in the 327 Mhz reciever.
• 04nov05    alfalfa (a2010) monitoring of data for month of oct05
• 02nov05    updated system performance page for oct05
• 02nov05    Alfa Tsys for month of oct05.
• 02nov05    fractional occurrence of rfi for oct05.
• 29oct05    lbw calibration jumps for murray's oh data.
• 28oct05    standing waves measured by moving the platform with the tiedowns.
• 21oct05    The output of the 327 Mhz rcvr after the 1st amp (and before the filter).
• 17oct05    location of faa 1350 radar aliases in alfa.
• 16oct05    1 Mhz comb in 327 coming from digital control units in dome AC units.
• 14oct05    Cal stability for mathews 430 feed checked.
• 13oct05    added idl routine atmclp to process coded long pulse data from ri rawdat.
• 10oct05    some linux kernels see no speed up when running 2 processes on a dual processor cpu.
• 07oct05    Tsys jump of sbw aug05 is from the cal value changing.
• 06oct05    fractional occurrence of rfi for sep05.
• 06oct05    Measure the 1300/1400 Mhz birdies in lbw. Most comes from the wapps.
• 05oct05    Alfa Tsys for month of sep05.
• 05oct05    a2010 (alfalfa) monitor data for month of sep05.
• 29sep05    added 430 carriage house cal values.
• 27sep05    atm digital receiver  glitches every 100 ipps.
• 26sep05    added idl shsxxx routines to read atm echotek digital receiver data.
• 20sep05     cell phone harmonics in lbw while transmitting from inside the dome.
• 20sep05    added cell phone info page.
• 16sep05    td8 analog input problems.
• 15sep05    alfa: the cal deflection is not a function of the feed rotation angle.
• 14sep05    TsysA-TsysB "polarized Tsys" with the alfa rcvr. Az spins and feed rotation.
• 13sep05    tilt sensor measurement while rotating turret floor (after rolling surface section replaced).
• 07sep05    tension in tiedowns after the loadcells were recalibrated.
• 05sep05    fractional occurrence of rfi for aug05.
• 05sep05      The 16Khz comb at 327. Grounding the motor shields helps for awhile.
• 03sep05     Alfa Tsys for month of aug05.
• 03sep05     Updated system performance or aug05.
• 27aug05    the 16Khz comb at 327 Mhz is coming from the alfa motor controller.
• 25aug05    Testing the cal and measuring Tsys for mathews 430 dipole on ch.
• 17aug05    Fitting Tsys for alfa using data jan05 thru jul05.
• 14aug05    sband bistatic run pointing problems (17apr05 run)
• 11aug05   installed new cband cal values (measured 10jun05).
• 11aug05    updated system performance for jul05.
• 11aug05    added fractional occurrence of rfi for july05
• 10aug05    Plot Tsys vs za by month for alfa. Added months mar,apr,may,jun,jul05.
• 08aug05    check performance of cband hi for thankins.
• 08aug05   17apr05: tension in tiedowns during sband run.
• 06aug05  p2030 alfa pulsar search sees large 12 second compression in the 01aug05 data (from faa radar).
• 19jul05    galfa pixels 4a,6a switched 11jul05 thru 19jul05
• 13jul05    power levels drift/jump in pixel2b of galfa spectrometer.
• 11jul05    alfa: replacing pixel 4a fiber receiver makes 174Khz ripple go away.
• 07jul05   fiber tests show that 174Khz ripple comes from the fiber receiver.
• 06jul05    fractional occurrence of rfi for jun05
• 01jul05    sbn receiver warms up during sband radar run.
• 25jun05    td 12 releases after lightning strike.
• 23jun05   lbw resonance polA at 1400 Mhz
• 21jun05    lbw cals measured 01jun05 after polB cal cable fixed.
• 12jun05    1428Mhz birdie in alfa 18may05 to 23may05.
• 10jun05    alfa beammaps from spider scans (on 3c138 taken jan05)
• 09jun05    time for sband dewar to cool down.
• 07jun05    16 khz comb in the 327Mhz receiver.
• 05jun05    wapp fits file usage.. updated to look at all 3 discs..
• 05jun05    updated a2010 (alfalfa) monitor data for month of may05.
• 03jun05    time for lbw dewar to cool down.
• 02jun05    fractional occurrence of rfi for may05
• 31may05    weekly report of problems started.. 25may05
• 31may05    galfa pixel4a,6a were switched (before 02may05 until 31may05)
• 30may05    distomat 4 loses power 6pm. ac filter at input to canister burns up...
• 28may05    lbw stokes calibration. included date on  4 more sources jul04-apr05.
• 26may05    alfa pixel4a still has 173Khz ripple with amp of .09K.
• 20may05    monitor disc usage by project in the wapp spectral line disc directory.
• 19may05    discrete gain jumps and a1.2 hz crosshead oscillation in the lbw gain.
• 09may05    comparing lbw, alfa performance at OH with the 10db amps in.
• 07may05    added p2030 user project page.
• 07may05    p2030 pulsar data feb05 thru apr05 shows aerostat compression with new amps.
• 05may05    modeling the periods created by the aerostat radar.
• 05may05    put aerostat radar info in one page
• 02may05    fractional occurrence of rfi for apr05.
• 02may05    updated system performance for apr05.
• 19apr05    drifting of the wapp clocks (ntp off)
• 19apr05    ntpd time jumps on the wapps when pulsar search p2030 run.
• 12apr05   a2010 1 second total power vs position in strip for apr05.
• 11apr05    p2030 pulsar data shows compression with new rf amps and wapps not starting together.
• 08apr05    a2010 drift scan data (apr05) with new amp in pix2 show radar compression.
• 06apr05    a2010 monitoring. add data for apr05.
• 06apr05    10db gain amp placed in front of alfa pixel2a,b mixer.
• 05apr05    fractional occurrence of rfi for mar05
• 04apr05    Gain stability of the alfa system using a2010 drift scan data.
• 04apr05      updated system performance for mar05
• 02apr05    Comparing the system performace of alfa and lbw at oh frequencies.
• 30mar05    faa 1350 radar harmonics appear in  alfa surveys.
• 29mar05    data taken 18nov04 show 1400Mhz birdies in distomats 3,4.
• 24mar05    1430 Mhz birdie in alfa pixel0b.
• 17mar05    430 linefeed gain curve.
• 17mar05    430 linefeed calibration page added.
• 17mar05    pointing model 16 for the carriage house made and installed.
• 14mar05    include 430 ch in system performance plots.
• 13mar05    updated platform temperature measurements from 2000 through feb05.
• 10mar05     TsysA/TsysB ratio for alfa.. added plots vs ra,dec,l, and b.
• 08mar05    TsysA/TsysB ratio for alfa spectral wapp data. 01nov04 thru 28feb05.
• 08mar05    description of computing tsys from the tsys archive.
• 05mar05    fractional occurrence of rfi for feb05 updated.
• 04mar05    updated system performance for feb05
• 04mar05    alfa pwr jumps  (a2010,a1963), slow recovery from faa radar. Problem not in downstairs iflo.
• 01mar05    327 receiver gain curves for data taken mar03 to feb05.
• 01mar05    327 system performance for data used to fit the gain curves.
• 27feb05    26feb05: punta salinas radar does not stay in mode A
• 18feb040     lband multibeam system. Show rotation rate vs parallactic angle and maximum integration times.
• 6feb05  how much does the az/za move if we drift in J2000 coordinates.
• 16feb05    hpbw vs lamda for all receivers. data taken 2004.
• 15feb05    fractional occurrence of rfi  oct,nov,dec04,jan05. Cleaned up alfa plots. Thanks to mmd.
• 13feb05    hi frequency system performance after reflectors adjusted.
• 04feb05    dome cam limit switch replaced with switch/strikers. New limits measured.
• 03feb05    td12 moves erratically and then goes into foldback.
• 02feb05    updated system performance thru 31jan05
• 02feb05  fractional occurrence of rfi for jan05
• 31jan05    Single pol/board wapp spectral line observing only provides 1 pol.
• 24jan05    For tsys monitoring, included plots for TsysPolA - TsysPolB
• 23jan05    recomputed sysperformance for alfa using the new cal values.
• 23jan05    plots of alfa Tcal vs frequency. Data taken 30sep04.
• 21jan05    look at cb,cbh,xb gain before and after reflector adjustments.
• 18jan05    distomat failures, include plots az vs za,and az vs hour of day.
• 18jan05    The 60Mhz harmonic birdie put to rest...
• 11jan05    430 mapping project a1731. Variation of Tsys.
• 11jan05    430 Mhz TsysPolA-TsyspolB drifting for 2003, 2004.
• 06jan05    updated 29nov04 alfa rotation angle to fix pointing error in computation. new angle 1.55 deg.
• 05jan05    updated system performance for dec04. (now includes alfa).

2004   (top)
• 14dec04    drifting 60 Mhz birdie seen at 60 Mhz in the dome with a spectrum analyzer
• 12dec04   fractional occurrence of rfi for nov04.
• 10dec04   updated system performance plots for nov04.
• 12dev04    Calibration scans with alfa, rotation angle offset, and beammaps (a first pass).
• 01dec04    Look at how the fits header locations are computed.
• 23nov04    9186Mhz birdie at xband coming from oscillation in sbw dewar.
• 22nov04    proj a1552.. cordrift. Negative ghost of galaxy in strip caused by bandpass correction.
• 20nov04    19nov04 data shows 60Mhz birdie is coming from the dewar monitoring system.
• 20nov04    18nov04 data: 60Mhz harmonics jump ever 2.67 seconds (1 ms data with wapps).
• 19nov04    12nov04 data: 60 Mhz birdies are coming thru
• 18nov04    1367/1382 radar birdies were punta salinas with chn 18 left on.
• 16nov04    tiedown 4 trouble with power supply and then motor overspeed.
• 12nov04    azimuth dependence of faa radar using alfa and 64 usec dumps.
• 08nov04    fractional occurrence of rfi for oct04.
• 07nov04    28oct04 data shows lband drifting birdies  seen at lband and 430 Mhz.
• 07nov04    system performance plots for oct04.
• 06nov04    FCC rules for broad band over power lines access (oct04)
• 06nov04    FCC reallocation of the 1390,1430,1670,2385 Mhz bands (dec01)
• 03nov04    galfa spectrometer time stamp stability.
• 01nov04    spider scan (cima) positions updated so all strips pass thru center of source.
• 31oct04    alfa precursor a1956. driftchase pattern position errors from 21oct04.
• 20oct04    alfa precursor a1956. Test data taken 28sep04. Positions start of scan off.
• 17oct04    sbn 1.2 hz oscillation in polB. same frequency as the dewar refrig.
• 09oct04    430 Mhz filter in front of dewar removes the tv intermods.
• 09oct04    fractional occurrence of rfi for sept04
• 09oct04    updated system performance for sep04
• 07oct04    updated alfa jumping from radar. Pulsar data  shows it is the faa radar.
• 07oct04    punta salinas, faa, and aerostat radars total power vs time using alfa.
• 29sep04    cband polA oscillations and Tsys jumping around.
• 27sep04    radar is causing the total power in some alfa beams to increase.
• 24sep04    checking the ra,dec J2000 coordinates in the header after the 16sep04 changes.
• 22sep04    mathew's 430 test feed performance after lowering it 3 feet.
• 21sep04    Phase delay needed in the line feed for focusing of the ao dish.
• 17sep04    wind speed and platform oscillation frequencies for tropical storm jeanne.
• 14sep04    a1946 alfa drift scans. Jumps in the total power 06sep04.
• 13sep04    cross scans on 3c286 using Jmathews test feed on the carriage house.
• 12sep04    cal values for lband wide measured 06aug04, installed 12sep04.
• 11sep04    added sbw to plot off gain vs freq,za for all receivers.
• 10sep04     installed sbw gain curve for data taken 15may04 - 01sep04.
• 10sep04    created sbw calibration page
• 10sep04    a description of the gain curves used at ao.
• 08sep04    1380 Mhz Birdie in pixel 0b of alfa data.
• 08sep04    174 khz ripple in alfa pixel4a data as seen by wapps and galfa.
• 07sep04    carl heiles' notes on the galfa spectrometer.
• 02sep04    proj a1946,alfa month of aug. Check that brds have consistent hdr info and that time steps are 1 sec between records.
• 01sep04    updated sysperformance for aug04
• 01sep04    Tsys alfa using cal on/offs from aug04.
• 27aug04   the stability of the async cal mode of cima.
• 25aug04    updated the alfa pixel numbering drawing to be correct.
• 22aug04    a1946 drift scan thru a source. data timestamp ok, rotation angle ok (this page updated 27aug04).
• 22aug04    a1946 cross scans after beam order changed.
• 20aug04    a1946 alfa precursor proposal. data taken 19aug04 (cross scans).
• 16aug04    calibration scans with alfa at 1665 Mhz.
• 13aug04    dome vibrations while moving at slew rate at low za.
• 10aug04    measuring the alfa calvalues at 1665 Mhz using sky and absorber.
• 09aug04    fractional occurrence of rfi for jul04.
• 08aug04    updated system performance for jul04.
• 02aug04     ripples in lbw near 1390 and 1400 Mhz (a1861:may04,a1914:aug04).
• 01aug04   faa radar compression of the alfa system.
• 20jul04    updated sbw system performance to new cal diode values.
• 18jul04    measured sbw cal values using sky and absorber.
• 13jul04    fractional occurrence of rfi for jun04
• 08jul04    Using mean,median, and robust averge to remove Tsys in cormapping routines.
• 04jul04   updated system performance thru jun04.
• 03jul04    updated gain curves all receivers with new sbh fit
• 03jul04    sbh gain curves from feb04 thru jun04 data.
• 03jul04    sbh system performance used to compute gain curves feb04-jun04
• 02jul04    1400 Mhz birdie coming from 100Mhz distribution/wapps in control room building.
• 01jul04    azimuth swing looking at 1400 Mhz birdies with high spectral resolution.
• 30jun04    added high freq resolution dynamic spectra of 1374 Mhz birdie.
• 29jun04    distomat birdies (30may04) still present after communications changed from copper to fiber.
• 28jun04    lbw polB cal jumps on 23apr04
• 22jun04    drifting birdies in lb system with 60 Mhz spacing.
• 21jun04    summary of 430 Mhz birdies may/jun04 compiled by chris salter.
• 17jun04    xband performance above 10Ghz.
• 17jun04   extend xband cal value vs freq plot to 12.3 ghz.
• 10jun04    added fractional occurrence of rfi for may04
• 05jun04    pointing error as we lose tension in the tiedowns.
• 04jun04    added system performance for may04
• 29may04    added fractional occurrence rfi for apr04
• 28may04    1374.495 Mhz birdie (a1861).
• 28may04    1400 Mhz birdie (a1861).
• 27may04    started list of monitor data that is backed up.
• 23may04   Compare az,za model offsets with horn survey.
• 23may04    the az,za model offsets for the "other" receivers relative to sbn from model15.
• 18may04    aas plots for jagadheep
• 15may04    pointing model 15
• 13may04    updated tiedown 4 limit switch positions after jack replaced.
• 09may04    results of the 08may04 horn survey.
• 08may04    added blurb on turret encoder.
• 04may04    Alfa Tsys measured using the old iflo system.
• 04may04    alfa cal values measured in the lab.
• 03may04    horn survey(02may04)  after moving the horns.
• 01may04    surveying the tertiary (01may04)
• 29apr04    horn survey results 28apr04.
• 27apr04    resonance in alfa receiver at 1537.7 Mhz.
• 26apr04    Alfa Tsys/Tcal using the old iflo system.
• 12apr04    computing alfa wedge position on the floor.
• 09apr04    quick look lbw performance after kevlar cable tensioning.
• 07apr04    rcvr system performance thru 01apr04
• 07apr04    fractional occurrence of rfi for feb04
• 27mar04    xband gain curves mar03 thru sep03
• 18mar04    xband tsys vs frequency.
• 18mar04    installed new cal values for xband receiver.
• 14mar04    new cal values for sband high..
• 14mar04    added description on controlling the gregorian cals...
• 14mar04    moved cal values from home page to a page of its own.
• 10mar04    sbh gain curve fit using data taken 15may03 thru 30sep03
• 10mar04    system performance sbh for gain curve dataset.
• 09mar04    sbn gain curve fit using data taken 01mar03 thru 29feb04
• 09mar04    system performance sbn for gain curve dataset.
• 08mar04    cband gain curves using data from may03 thru feb04.
• 08mar04    system performance cband may03 thru feb04. data used for gain fit.
• 08mar04    rcvr system performance thru 29feb04  (cband hi now included).
• 08mar04    fractional occurrence of rfi for feb04
• 04mar04    looking at the alfa rf/if processor using a noise source.
• 29feb04    fit gain curve to cbh feb04 calibration data.
• 27feb04    notes to myself.. computing Trcvr.
• 25feb04    distomat failure vs az,za
• 25feb04   platform corner height vs za, torque. Will ALFA be a problem??
• 23feb04    looking at 6.7 ghz masers with the cband high receiver.
• 23feb04    added cbh to tsys monitoring output.
• 18feb04    updated sysperformance page thru 01feb04.
• 18feb04    corrected parallactic angle picture.
• 17feb04    tsys vs frequency for cband hi.
• 17feb04    a first look at the rfi in the cband hi receiver band.
• 16feb04   (on-off)/off on 3C454.3 covering the entire cbhi band.
• 16feb04    a first look at cband high calibration.
• 15feb04    update the horn survey page to include the 11feb04 and 14feb04 horn theodolite surveys.
• 12feb04    atod , signal conditioning board description for turret.
• 01feb04    fractional occurrence of rfi for jan04
• 25jan04    computed gain curve for xband oct05 to 25jan03.
• 25jan04    moving the 327 receiver on the turret floor.
• 25jan04    moving the xband receiver on the turret floor.
• 24jan04    moving the 610 Mhz rcvr to a new turret position.
• 06jan04    1422.5 Mhz birdie from channel 54 transmitter.
• 05jan04    defining the sign of the pointing error for turret and calib scans.
• 02jan04    updated system performance thru 31dec03
• 02jan04    fractional occurrence of rfi for dec03

2003   (top)
• 15dec03    updated system performance thru 15dec03.
• 15dec03   fractional occurrence of rfi for nov03.
• 12dec03    sband transmitter page. Include TTI module i/o usage.
• 04dec03    372Khz comb in 327 rcvr from sbTx console in dome.
• 02dec03    372Khz comb in 327 rcvr coming from inside the SbandTx room.
• 25nov03    372Khz comb in 327 rcvr.
• 12nov03    fractional occurrence of rfi for oct03.
• 12nov03    weight distribution on the turret rotary floor.
• 09nov03    updated system performance for oct03.
• 02nov03    updated gain curve page to include new lbw curve.
• 02nov03    lbw gain curves computed using data from mar03 thru sep03.
• 30oct03   1417.5 birdie from color camera 5 in the dome.
• 30oct03    added az,gr,ch limits to little know facts
• 21oct03    Reflector survey 2 (oct01) added normal errors along north/south direction.
• 19oct03    Reflector survey 2 (oct01) results.
• 15oct03   azimuth encoder jump 14oct03.
• 14oct03    1289.7 Mhz radar (punta salinas??)
• 12oct03    time stability of the iridium signal.
• 10oct03    sband wide cal values from 15aug03 data.
• 05oct03    updated system performance for month of sept03
• 05oct03    add fractional occurrence of rfi for sept.
• 25sep03    theodolite survey results from jul03.
• 24sep03    first holography outputs from aips (via slava).
• 17sep03    xband: resonances in receiver.
• 14sep03   xband: compare sefd new and old horn
• 14sep03    Compare xband TsysB/TsysB using cals and source.
• 14sep03   Tsys vs frquency for xband before, after new horn.
• 10sep03    added fractional occurrence of rfi for august
• 10sep03    increasing the isolation for iflo monitor port 1a.
• 10sep03    added tsys ascii output description on tsys mon page.
• 08sep03    updated system performance for month of august.
• 02sep03    added routine arch_getmap() to input a cormap from the data archive.
• 01sep03    holography,plots of phase vs time,za , correction at the peaks.
• 23aug03    a1659 sband hi CH ons only. Example of processing this type of data.
• 12aug03    bs116b vlba holography run. telescope offsets for each pattern.
• 07aug03    system performance. reran data 01mar03 to aug03 with new flux fits.
• 05aug03   added fractional occurrence of rfi for july.
• 31jul03    430 dome birdies with 20 Mhz filter installed.
• 28jul03    added tiedown page and failure log.
• 21jul03   xb pointing offsets from calibration runs
• 21jul03    new xb cal values installed (sky/absorber measurements)
• 17jul03   ri glitches in digitizer Q1.
• 13jul03    compare kildal and german cortes horns on lbw.
• 02jul03    added fractional occurrence of rfi for jun03
• 02jul03    updated system performance page thru 30jun03
• 01jul03    alfa IF tested 15may03 using lbw receiver.
• 01jul03    az swings looking at polarized Tsys with sbh.
• 27jun03    start collecting rfi birdies in a list by freq.
• 27jun03    collect various rfi az spins together for comparison.
• 27jun03   az spin with 430 Mhz birdies. tv station intermods.
• 25jun03    recomputed lbn gain curves for sep01 thru 20aug02.
• 04jun03    fractional occurrence of rfi for may03.
• 03jun03    xband. polb variations for a1704 recomb lines.
• 01jun03    system performance updated thru 31may03. lbn,lbw,sbw,sbh,cb,xb.
• 29may03    added correlator drifts for data thru 27may03
• 19may03    lbw stokes (new lbw) src:B1040+123,B1228+307,B2121+248
• 18may03    cband cal values measured 16may03 installed.
• 18may03   cband cal values 22apr03 to 04may03 installed.
• 17may03   updated links for "using idl to process spectral line data"
• 15may03    resonances in the sbh receiver.
• 14may03    sband high cals recalibrated.
• 09may03    added corsavbysrc for idl automated on/off processing.
• 08apr03    .3 kelvin polarized tsys vs az,za using lbw.
• 07apr03    fractional occurrence of rfi for apr03
• 06may03   lbw 1290,1350 radars. 1ms detect. show rotation drift and compression.
• 04may03    system performance 430 dome.
• 04may03    system performance lbw. x102 runs 02may03
• 04may03   system performance 327 rcvr.
• 03may03    system performance 610 rcvr.
• 02may03    system performance.  sbn mar03 to may03
• 02may03    system performance. xband apr02 to feb03.
• 02may03    system performance.  lbw mar03 to may03
• 01may03   added system performance page. Started with lbn,lbw,sbn,cb,xb.
• 29apr03    IFLO compression by the FAA 1350/1330 radars using lbw,lbn.
• 28apr03    dewar temperatures. year to date is now being updated for new data.
• 27apr03    lbn system performance 01sep01 thru 20aug02 (with updated calvalues).
• 23apr03   poor isolation in the downstairs iflo buffer amplifier monitor ports.
• 22apr03    sefd vs for lbw using 3C138
• 17apr03    resonances in the new lbw receiver.
• 13apr03    az,zenith angle dependence of 1350,1290, and aerostat radars.
• 09mar03   fractional occurrence of rfi for mar03
• 07apr03    slow drift in gain of sbc1 polB in interim correlator.
• 06apr03    radar power in the downstairs iflo.
• 31mar03    creating harmonics in an amplifier.
• 26mar03    tv station power from hilltop monitoring. 1998 to current date.
• 20mar03    galfa talk on rfi.
• 15mar03    pitch,roll model from 28feb03 tilt sensor run (after dome move).
• 15mar03    tilt sensor results from 28feb03 run (after dome move) uncalibrated..
• 14mar03   jumps in interim correlator sbc 2 power levels.
• 08mar03    fractional occurrence of rfi feb03
• 07mar03    finished model14. included variogram, verifying model, other rcvr offsets.
• 07mar03    added model offsets each rcvr to turret page.
• 05mar03    pointing model14 results.
• 04mar03   turret room temps for feb03
• 02mar03   Compare focus curves before after dome move.
• 02mar03    focus curve  28feb03 after the dome move.
• 27feb03    lbw gain curves 21nov02 to 17feb03 after old lbw phase center was moved.
• 27feb03    lbw system performance after the old lbw phase center was changed.
• 27feb03    1371,1387.2 radar..
• 22feb03    compare focus curves taken after 01dec02.
• 21feb03    focus curves sbn: CTA21, 3C138 taken 18feb03 after shimming.
• 20feb03    make a pitch,roll model from the 19feb03 tilt sensor swings.
• 20feb03    added tilt sensor run from 19feb03
• 20feb03    theodolite results from feb03 survey
• 20feb03    tilt sensor results from feb03 survey
• 16feb03    ao9 survey of dome 12feb03 after first shimming cycle.
• 15feb03    tilt sensors compare pitch roll 05feb03 (before shimming), and 12feb03 after 1st shimming.
• 14feb03    Azswings, za strips tilt sensor data 04aug01 during aug01 a09 survey.
• 12feb03    Azswings, zastrips tilt sensor data 05feb03 before elevation rail shimming.
• 07feb03   fractional occurrence of rfi jan03
• 06feb03    compare pitch,roll, focus 09aug01 with 04feb03 (before shimming).
• 06feb03    turret room temps for jan03
• 02feb03   tilt sensor angle with the turret floor.
• 02feb03    tilt sensor measurements of the 1,3az terms (16dec02).
• 31jan03     yr2002 cable tensions vs platform hght,temp,tdPositions. data and fits.
• 11jan03    added 10jan03 focus curve to comparison of most recent focus curves.
• 11jan03    added cband focus curve taken 10jan03.
• 05jan03    fractional occurrence of rfi dec02
• 01jan03    turret room temps for dec02.

2002   (top)
• 30dec02    sbn narrow focus curve done 16dec02.
• 30dec02    sbn sefd ratio shows that tsysA,B difference is real.
• 23dec02    max sky az,za sky velocity vs za.
• 18dec02   added graphic monitor of 16K stage dewar temperatures.
• 15dec02    lb,sb,cb gain.. showing sources used to compute gain curves.
• 11dec02    Updated Alfa postAmp page showing gain needed in postamps.
• 06dec02   plot of gain curves with new cband data.
• 06dec02    cband gain curve after horn focus.data 28aug02 thru 30nov02.
• 06dec02    cband system performance 28aug02(after horn focus) thru 30nov02.
• 06dec02    fractional occurrence of rfi for nov02
• 05dec02    compare gain/sefd sep00 to aug02..lband,sband,cband.
• 04dec02    turret room temperatures for nov02.
• 04dec02    100 Mhz frequency reference unlocks (25nov02).
• 02dec02    lbw system performance change after horn moved.
• 24nov02    lbw horn focus change.
• 20nov02    added idl routines for ao pointing.
• 07nov02   Using the calOn - calOff to remove the bandpass shape.
• 05nov02    cross scans on seti@home feed taken 01jul02.
• 04oct02   primary reflector errors measure oct01 (east half from lynn bakers plots)
• 04nov02    turret room temperatures for oct02.
• 04nov02   fractional occurrence of rfi for oct02.
• 28oct02    add rfi hilltop monitor page. started record of high freq receiver.
• 23oct02    410 Mhz birdies from the navy transmitter in aguada.
• 20oct02    added monitoring of distomat failures by month.
• 13oct02    stokes reduction. reran lbw,lbn,sbw sources.
• 07oct02   added more programs to the telescope monitoring page.
• 05oct02    spectrum analyz plots of lbw dewar output taken 18sep02.
• 05oct02    updated lbn stokes data to 01oct02.
• 03oct02    some notes on the multibeam power levels for the post amp chassis.
• 03oct02    fractional occurrence of rfi for sep02
• 03oct02    turret room temperatures for sep02.
• 29sep02    gain curves for various receivers.
• 29sep02    Rms noise versus integration time using the interim correlator and a noise src.
• 28sep02    spike in central channel of correlator bandpasses.
• 25sep02    correlator bandpasses using a noise source.
• 25sep02    Added to: comparing measured and computed bandpass shapes...
• 16sep02    azimuth encoder jumps.
• 10sep02    lbn gain curves after horn focus change (data 21aug02 thru 09sep02)
• 10sep02    lbn system performance 21aug02 thru 09sep02 (after horn focus change).
• 06sep02    Comparing the measured and computed bandpass shapes of the digital filters.
• 03sep02      turret room temperatures for aug02.
• 03sep02    fractional occurrence of rfi for aug02.
• 30aug02    corbl: idl routine to interactivly baseline a correlator dataset.
• 29aug02    cband gain curves from data taken sep01 to aug02
• 28aug02   gain before/after moving the cb horn so phase center is at focus.
• 27aug02    Telescope monitor displays running from multicast memory.
• 24aug02    Tsys vs turret position before, after lbn focus change.
• 23aug02    added corcalib idl routine. Calibrate on only scan with calonoff.
• 22aug02    moving the lbn horn to the correct phase center.
• 20aug02    added ao idl correlator routines to the downloadable software page.
• 19aug02    added selectrcv program documentation. Creates a subset of a datafile by rcvr.
• 19aug02    added srcTimes program documentation. compute lst rise,set times.
• 18aug02   added bToJ B1950->J2000 program documentation.
• 17aug02    added handy filter programs documentation. so far just cordmp.
• 16aug02    system performance for cband sep01 through aug01.
• 11aug02   327 calibration runs
• 09aug02   327 receiver breakdown of tsys contributions.
• 05aug02   fractional occurrence of rfi for jul02.
• 05aug02    added turret room temperatures for jul02
• 04aug02    updated tertiary connection point locations from 020204 survey.
• 01aug02    dome pitch,roll while td's track the average platform height.
• 01aug02   resonances in the cband receiver.
• 31jul02    resonances in the sbh receiver.
• 24jul02    2 MHz comb in 327 Mhz receiver 327 2mhz comb from 430 waveguide power monitor.

                  Gasket material on huffman boxes degrade with time.
• 30jul02    added page to download software. First routine is cordmp.
• 27jul02     2 hz gain variation in xband from the rcvr crosshead.
• 25jul02    2 mhz  comb in 327 receiver.
• 24jul02   xband drift scans.
• 10jul02    added idl routines to look at agc (az,gr,ch) data.
• 08jul02    pointing errors with and without the dome hydraulic brake.
• 07jul02     fractional occurrence of rfi for jun02.
• 04jul02     turret room temperatures for jun02
• 28jun02    gregorian dome hydraulic brake performance
• 25jun02    torques needed to move the dome 2<->20 degrees za.
• 22jun02    dome amplifier glitching when changing directions.
• 14jun02    TsysA-TsysB variation with azimut using Cband receiver at low za.
• 13jun02    horn spacing for multi-beam system.
• 11jun02    Measure loss from 19cm and 25 cm horn offset using lbn (for multi beam tests).
• 08jun02  platform and bowl temperatures 2000-2002.
• 06jun02   faa radar harmonics when 1350Mhz radar not within digital filter bands.
• 04jun02    turret room temperatures for may02.
• 04jun02    fractional occurrence of rfi for may02.
• 03jun02    compared lbn cal values 28jan02 computed by phil and karen and compare sefd lbw,lbn.
• 29may02    brake valve on dome clogs while testing.. data 21may02
• 27may02    color camera biridies at lband (taken 24may02) with camera #1 not installed.
• 15may02    lbn sefd over entire receiver band.
• 15may02    moved lbw calibration list to separate page.
• 13may02    corrected focus curves for kildal phase center error.
• 11may02    lbw cal value. Rms polB worse than polA (probably the ripple in polB)
• 10may02    lbw polB ripple. switched dewar output cables. ripple in dewar.
• 10may02    fractional occurrence of rfi for apr02
• 09may02    turret room temperatures for month apr02 added.
• 01may02   Ripple in lband wide pol B still present.
• 28apr02    distomat birdie at 1399.82 reappears.
• 26apr02    added lbn to "best" turret position by tracking sources.
• 25apr02    updated stokes data for cband sep01->15apr02
• 24apr02   update stokes data for sbw sep01->>15apr02
• 23apr02    updated stokes data for sbn jun01->15apr02
• 23apr02    updated stokes data for lbw jan01->15apr02
• 22apr02   Look for "best" turret position by tracking sources.
• 20apr02    updated stokes data for lbn thru apr02
• 19apr02    added corstokes idl routine to intensity calibrate stokes data.
• 15apr02    added mmgetarchive idl routine to extract calibration data.
• 15apr02    added sband high calibration runs for 08apr02,11apr02.
• 14apr02    tsys versus turret position. tsys bumps.. updated for sbh.
• 09apr02    rfi from color cameras in the dome reappears.
• 07apr02    resonances in the lband wide omt.
• 06apr02    added system temperature plots: daily, yeartoday, by year.
• 05apr02    added fractional occurrence of rfi for mar02
• 04apr02    added turret room temperatures for march. New Ac now on..
• 03apr02     added horn survey results.
• 03apr02    include sband high focus curve in comparison of focus curves.
• 03apr02    added sband high focus curve.
• 26mar02   added dewar temperature monitoring.
• 26mar02    added monitoring info section it's easier to find some of this data.
• 24mar02    comparison of gain before and after reflector adjusted.
• 23mar02    sband high (3-4 ghz) Tsys and calvalues versus frequency.
• 21mar02    added idl routines to display the dewar temperatures.
• 19mar02    focusing with the tertiary.
• 17mar02   sbh cal values measured at the rcvr test shack.
• 11mar02    added lbw focus curve.
• 11mar02    added lbn focus curve.
• 11mar02    comparing focus curves. added lbn,lbw, sbn from mar02.
• 11mar02    redid sband narrow focus curve to check that tertiary hadn't moved (it didn't)
• 09mar02    fractional occurrence of rfi for feb02. xband now included.
• 08mar02    added feb02 turret room temperatures.
• 08mar02    sbw focus curve.
• 08mar02    comparing focus curves. Added sbw, separate plot of most recent curves.
• 07mar02     hc3n,hc7n in tmc1 using xband receiver.
• 05mar02    comparing focus curves
• 04mar02     lbn cals. added values measured 28jan02 (but not installed as cal values)
• 04mar02    lbn cals. added values measured 06dec01 (but not installed as cal values).
• 03mar02    added az swing to the 1400 Mhz birdie.
• 02mar02    Computed "other" cband cals using ratio to hi correlated cal.
• 28feb02   1400 Mhz birdie  (not the distomats).
• 28feb02    HC3N lines at 9097,9098, and 9100 Mhz possible detection at xband.
• 24feb02    22feb02 Tsys vs turret position lbn,lbw,sbn,sbw,cb,xb. Shows Tsys bump.
• 22feb02   21feb02: xband calibration run 3C138,3C286, and B1040+123.
• 21feb02    xband:10 beammaps (turret scan) J0237+288 after pointing offsets added.
• 20feb02   history of turret positions and pointing az,za offsets by model.
• 20feb02    how many points does it take to move pointing model to a (non sbn) receiver.
• 19feb02   cband pitch,roll correlation with coma.
• 18feb02    xband calib run on J2253+161,3C48 on 02jan02
• 18feb02    added cor idl plotting  routines mmplotgtsb,mmplotcsme.
• 17feb02    xband pnterr, tsys,sefd,beammaps on J2253+161,J0137+331 (3C48) using turret scans.
• 15feb02    show the fraction of time the remy radar spent at 1270,1290 Mhz for 2001.
• 12feb02    measured the radar parameters for the 1270 radar at remy.
• 10feb02    added fractional occurrence of rfi for 327,430.610,lband,sband,cband through jan02.
• 09feb02    added to the 1az term discussion for the horizontal offsets of dome.
• 07feb02    xband focus curve after shimming receiver.
• 06feb02    added history of turret positions for receivers.
• 05feb02  compute shims needed for pitch,roll, and focus correction.
• 04feb02    added turret room temps for dec01,jan02
• 04feb02    simulate tiedown motion after shimming the rails.
• 31jan02    cband focus curve taken 23jan02
• 30jan02   sband narrow focus curve taken 20jan02
• 30jan02    little known facts.
• 30jan02    tiedown motion needed to remove pitch,roll,focus error.
• 27jan02    pitch,roll of telescope using theodolite and tilt sensors (with 2d fit)
• 23jan02    added fractional occurrence of rfi for dec01.
• 17jan02   Use survey azimuth, encoder az differences to compute platform offset from AO9
• 12jan02    first shot at adding an azimuth encoder table to model 13.
• 09jan02    pointing model 13 (jan02).
• 04jan02  prelimary plots of ao9 survey 09aug01.
• 03jan02   multifreqency measurements of 3C38,3C138 sep01->dec01
• 02jan02    xband beammaps on J2253+161 using turret scans.
• 02jan02   xband pointing error and beamwidths from turret scans.
• 01jan02    xband focus curve after receiver installed (24dec01).

2001   (top)
• 26dec01    large ripple in 430 Mhz gregorian dome receiver.
• 23dec01    cband sefd vs za preview from 22dec01 calibration run.
• 23dec01   xband installation. added rfi plots. First out of focus light: gain,sefd,beammaps.
• 21dec01    xband installation. added power levels in if1 and rfi seen at xband.
• 20dec01    xband installation. turret strips for turret position, calvalues, tsys versus frequency.
• 13dec01   Updated measuring cal with sky/absorber to include reflection coefficient.
• 10dec01    added software modification history page.
• 07dec01  added fractional occurrence of rfi for month of nov01
• 03dec01    sband narrow calibration sep-nov01
• 03dec01   lband wide calibration sep-nov01
• 21nov01  stokes: added parameter definitions, srclist, updated cband to 19nov01.
• 19nov01  lbw gain/tsys calibration from Sep01.
• 11nov01  added idl documentation for generic routines.
• 08nov01  1381 gps L3 birdie seems to be on all the time.
• 03nov01  Added turret room temp for month of  october.
• 31oct01  Timer module in air conditioner compressor causing rfi.
• 12oct01  sband wide cal values measured 20sep01.
• 10oct01  Description of measuring cals on the telescope using absorber and sky.
• 10oct01  1350 Mhz rfi tone when blanker in use.
• 09oct01 added images to illustrate radar harmonics at 260 IF.
• 08oct01  resonances in the sband wide receiver (20sep01 data)
• 06oct01  New airconditioner, cycle louvres, blower, compressor (5oct01 data).
• 05oct01  lbn image with magnetic relay installed on new ac compressor.
• 04oct01   Radar harmonics created in the 2nd IF
• 02oct01  idl routines to look at fractional rfi occurrence interactively.
• 02oct01  monthly update. fractional rfi occurrence for sept.
• 02oct01  monthly update. turret room temperature for September.
• 24sep01  lbn stokes. Redid with no mueller matrix correction (previous had used it).
• 22sep01 lbn image showing jumps when   aircondioner cycled on/off (from 20sep01).
• 22sep01 rfi color camera on service platform. before/after shielding.
• 21sep01  pointing strips on sbw. updated za model offsets.
• 21sep01  spectrum of the sband dewar output.
• 19sep01  fractional rfi occurrence by freq. added aug01 and new yeartodat. (lband).
• 17sep01  fractional rfi occurrence by frequency plots added. (lband).
• 15sep01 lbn total power jumps coming from new airconditioner compressor running.
• 14sep01 added turret room temp by hour and month (for 2001)
• 13sep01 updated info on a1459 baseline ripples.
• 10sep01  1% baseline ripple in polB lbwide that's been there for months.
• 09sep01  a1459 baseline ripple. lbn 1350-1420. 3min on/offs
• 29aug01  azimuth servo failures. motor torques build up while stopped (24aug01).
• 15aug01 rfi from color camera on the service platform (13aug01).
• 15aug01 rfi from tertiary motors and electronics (02/08aug01).
• 14aug01 cband gain/sefd after panels in northern half of dish adjusted (02aug01).
• 13aug01 pointing and gain changes from tertiary motor install (sbn).
• 02aug01 rfi from tertiary cpu control box (mounted in the dome).
• 02aug01 tertiary motors installed on tertiary. encoder tracking error for a sine wave.
• 28jul01 Added cabling page under hardware. Shows fiber connections.
• 14jul01   software documentation to input and plot platform height/temp from distomats.
• 10jul01  tertiary simulator output.
• 03jul01   Problems with using the lbw hybrid to make circular polarization.
• 01jul01   cband gain/sefd with pitch,roll,focus correction after SE quad adjusted.
• 01jul01   3C48 gain at cband after SE quad of dish adjusted. Compare with 02feb01.
• 01jul01   Fractional gain versus surface rms by freq. ruze curves.
• 30jun01   full stokes reduction of 3C48 after se quad of dish adjusted.
• 30jun01  Added system modification history page.
• 21jun01   carriage house hydraulic brake. Measure free fall velocity (no motor).
• 19jun01   added jan-jun01 lbn,cband,sbn stokes calibration data.
• 15jun01  stokes polarization calibration.
• 14jun01   lband narrow filter bank calibration.
• 12jun01   temperature dependence lbw cals. calon/off tracking blank sky.
• 08jun01   Slow rise time for cband cal to go from 95 to 100% of maximum.
• 08jun01   Carriage moving uphill/downhill with hydraulic brake on 1 motor.
• 02jun01     Interim correlator. Adjusting power levels with large out of band signal.
• 28may01  pointing error and gain before and after tertiary platform installed.
• 21may01   azimuth encoder rack gear error (measured 21jan00).
• 12may01   azimuth blown by wind while brakes on (06may01).
• 11may01   finished additions to rfi 1407 birdie
• 11may01  added tv station information page.
• 02may01 lband wide power levels at output of the dewar. also update the 1407 birdie info.
• 28apr01   1407 rfi birdie from tv station.
• 24apr01  idl routines to look at rfi from hilltop mo>
• 16apr01   compare turret scans with heiles calibration on CTA21
• 11apr01  the multi meter in the new rfi box.
• 06apr01   platform motion as we pull down equally on all 3 tiedowns.
• 27mar01  Added pointing page. started with model 12 preliminary results.
• 23feb01   pitch,roll, focus correction at multiple frequencies on 3C48, CTA21(feb01)
• 21feb01   cband calibration after surface adjusted jan01.
• 21feb01   moved sband calibration after surface adjustment from 11. misc. to sband calibration.
• 16feb01    updated focus gain loss. Routine was using wrong fwhm. switched to 2 sigma.

                    Mainly changed what gain would look like after we did the prf correction.
• 14feb01    add cband focus curve after jan01 reflector adjustment
• 14feb01    add sband focus curve after jan01 reflector adjustment
• 14feb01   added focus curve page
• 08feb01    plot measured surface errors primary versus azimuth,za.
• 31jan01   calibrate slide rule potentiometer versus encoder for tertiary.
• 28jan01   cband cals measured using absorber and sky
• 27jan01   430 dome looking for rfi from vittara jeep parked next to the control room.
• 27jan01    lband rfi at 1300 mhz from the distomats.
• 20jan01   added rfi removal techniques with frank briggs paper..
• 17jan01     x111 image display of rfi data.
• 17jan01     tertiary ramp dac -10 to 10 counts. plot dac val, velocity and force.
• 17jan01    Added tertiary entries. tracking error, force calibration, friction.
• 09jan01    Telescope gain after the eastern half of the reflector has been adjusted.

2000   (top)
• 29dec00  Added lbn cal value measurements.
• 28dec00     tsys during az swings with dome at 19 deg za. Shows 120 deg tsys bumps and sun getting into the beam.
• 27dec00    rfi measurement. lbn 1420Mhz, azswing dome at 19 degrees, 3mhz bw.
• 26dec00  Added rfi measurements page.
• 01dec00   System temperature versus turret angle offset.
• 27oct00     rotary floor room temperature versus hour of day.
• 10oct00      source tracks across the dish by declination and hour angle.
• 10oct00     added lband multi beam link to home page and paralactic rotation rate vs dec.
• 05oct00      327 calibration. turret strips showing turret position, and polA,polB offsets
• 02oct00      lband fit gain(az,za). Changed to color. included fit to only za dependence.
• 23sep00     sband narrow calibration. Sefd, gain, tsys, and fit to (az,za).

                     - added coef's to cband calibration.
                     - converted cta21 multifreq measurements to color
                     - converted lband (az,za) plots to color.
• 21sep00     cband calibration. Sefd, gain, tsys and fits to (az,za).
• 20sep00     lband fit gain(az,za). Changed to average gain.Updated plots,text
• 04sep00     CTA21 multifreq measurements gain. compute surface error via ruze formula.
• 28aug00   gain stability vs temp (after sband xmit experiment).
• 25aug00    610 receiver calibration
• 23aug00    lband fit gain(az,za) and comparison with pitch,roll,focus errrors
• 17aug00    rfi: radar ipps memo from 1997/1999
• 17aug00    started logging modification dates
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