Note: AST = UTC-4
RFI alert Mar 2007
20-04 UT = 16-00 AST on Mar 6,7,8 2007
A2010 may be impacted for the first 3 hours of the run on those nights.
We have been alerted to the following, military GPS-L3 test
Transmissions which may cause RFI to observations scheduled for the
use of L-band (21cm) on the UTC date(s) and time(s) listed below.
These tests are part of the pre-scheduled, quarterly L3 test
activations.
The 1381 MHz frequency is within the VLA L-band 21/20cm "LL"/"21",
"L1", and "L2", continuum default frequencies, and any L-band
spectral line set-up that includes 1381.05 ± 2.5 MHz.
Please be sure to include the date, time, and frequency of any
RFI shown below with your A2010 log.
Thanks!
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Notification of GPS L3 RFI world-wide
SUBJECT: GPS Satellite Testing Operations.
FREQUENCIE(S) AFFECTED: 1381.05 ± 2.5 MHz
DATE (UTC) TIME (UTC) Comments
(YYYYMMDD) (HHMM) (TEXT)
-----------------------------------------------------------------------
20070306 2000 - 2400 Quarterly RZAP Calibration.
20070307 0000 - 0400 Quarterly RZAP Calibration.
20070307 2000 - 2400 Quarterly RZAP Calibration.
20070308 0000 - 0400 Quarterly RZAP Calibration.
20070308 2000 - 2400 Quarterly RZAP Calibration. (Contingency)
20070309 0000 - 0400 Quarterly RZAP Calibration. (Contingency)
=======================================================================
Old RFI alerts
Last modified: Thu Mar 8 08:39:33 EST 2007
by martha