description, location, and code to evaluate the curves.
of gain curves with all frequencies plotted together.
Gain curves by receiver:
lband narrow (removed)
sband wide/low (1.8-3 ghz)
sband high (3-4 ghz)
cband (4-6 ghz)
cband high (6-8 ghz)
xband (8-10 ghz)
327 receiver (top)
430 dome. (top)
430 carriage house. (top)
Lband wide. (top)
taken Mar03 thru sep03 Installed 02nov03. Valid from 01mar03.
This is after the new horn was installed.
taken nov02 thru dec02. Installed dec02??. Valid 22nov02 thru
This was from the horn focus move till the new receiver was installed.
Installed dec02 ??. Valid 01sep01 thru 21nov02.
This is from the start of the calibration runs till the horn was moved
to correct for the phase error.
Lband narrow (no longer
taken 27aug02 thru sep02: This gain curve was made after the lbn
focus was moved on 27aug02. It was measured at 1300, 1375, 1415, and
Mhz. It is a function of za only.
Sband narrow. (top)
Sband wide/low. (top)
Sband high (3-4 ghz). (top)
taken 13feb04 thru jun04. installed 03jul04. Valid from 13feb05 to
current date. The new cals were installed and the horn was lowered .8
to put it in focus.
taken 15may03 thru sep03. Installed 10mar04. Valid from 01mar03 to
12feb04The cal values were drifting during this time period.
Cband (4-6 ghz). (top)
taken 25may05 thru 31oct05. Installed 22nov05. Valid
25may05. New amps were installed in the dewar on 25may05. The curves
measured at 9 frequencies.
taken may03 thru Feb04. Installed 08mar04. Valid from 05may03.
This is after the new cals were installed and the cal cable was
until the end of feb04. The curves were measured at 6 freq: 4500,4860,
5000, 5400, 5660, 5900 Mhz.
taken Aug02 thru Dec02 fit . Installed dec02 ??. Valid 28aug02 to
The cband gain curve was taken from data 28aug02 thru 30nov02. This
is after the horn focus was changed on 27aug01. The curve is a function
of az and za. It was measured at 4500, 4860, 5000, and 5400 Mhz.
taken 01sep01 thru 27aug02. Installed sep02 ??. Valid 01sep01 thru
This data was from the start of the calibration scans until the horn
focus was changed.
Cband hi (6-8 ghz). (top)
taken feb04. Valid 14feb04 onward.
The receiver was installed in feb 04. Data was taken at 4 freq:
Xband (8-10 ghz). (top)
taken 05oct03 thru 25jan04. Installed 25jan04. Valid 05oct03
The new horn was installed on 05sep03. The receiver was then taken
to the ant test range where Trcv and Tcals were measured. It was
on the telescope in oct03. It was moved to a new position on the rotary
floor on 08jan04. Data was taken at 8500,8800,9000, and 9200 Mhz.
taken mar03 thru sep03. Installed 27mar04. Valid mar03 thru
The elevation rail shimming and dome realignment finished in mar03.
Calibration data from mar03 thru sep03 was used to compute gain curves.
After sep03 the new horn was installed on the receiver. Data was taken
at 8500,8800,9000, and 9200 Mhz.
The plots were made using the idl routine gainget(az,za,freq,rcvNum,gainval).