Facilities > GBT > Observer Alerts > Expected RFI from GPS at 1381.5 MHz

Expected RFI from GPS at 1381.5 MHz

by Karen ONeil last modified Nov 08, 2012 by Toney Minter

We have just received the following notices from Daniel J. Mertely of NRAO-Socorro that we should be seeing RFI at 1381+/- 2.5 MHz on the dates and times listed below. Extragalactic HI projects that plan to observe around z~0.03 may be affected. Galactic HI projects, or extragalactic projects with either much smaller (< 0.02, say) or larger redshifts (> 0.04) should be OK.


 

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DATE (UTC) TIME (UTC) Comments
(YYYYMMDD) (HHMM)-(HHMM) (TEXT) ----------------------------------------------------------------------
20110127 1200 - 1900 Extended L3 tests, world-wide.
20110128 1200 - 1900 Extended L3 tests, world-wide.
20110129 2200 - 2400 Extended L3 tests, world-wide.
20110130 0000 - 0100 Extended L3 tests, world-wide.
20110324 0800 - 1700 Extended L3 tests, world-wide. 
20110325 0800 - 1700 Extended L3 tests, world-wide. 
20110913 1900 - 2400 Intermittent L3 tests, world-wide.
20110914 0000 - 0300 Intermittent L3 tests, world-wide.
20110914 1900 - 2400 Intermittent L3 tests, world-wide.
20110915 0000 - 0300 Intermittent L3 tests, world-wide.
20110915 1900 - 2400 Intermittent L3 tests, world-wide.
20110916 0000 - 0300 Intermittent L3 tests, world-wide.

20120320 2000 - 2400 Extended L3 tests, world-wide. 20120321 0000 - 0400 Extended L3 tests, world-wide. 20120321 2000 - 2400 Extended L3 tests, ww, BACKUP. 20120322 0000 - 0400 Extended L3 tests, ww, BACKUP. 20120322 2000 - 2400 Extended L3 tests, ww, BACKUP. 20120323 0000 - 0400 Extended L3 tests, ww, BACKUP.
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