[evlatests] Local RFI seen at 1797, 1800, and 1802 MHz

[Rick Perley]

    The WIDAR data taken last week has clearly identified some 
locally-generated RFI.  We can tell it's local, as these are seen only 
on baselines connected to antennas 5, 15, 19, and 24, with the strengths 
of the signals ***far*** stronger on the six baselines amongst those 
four antennas.  These four antennas are on W4, W5, W6, and W8 -- hence 
the source of the emissions must be adjacent to the end of the west arm 
(in the current configuration). 
   
    The signals are centered at 1797, 1800 and 1802 MHz.   They seem to 
be present throughout the 6 hour duration. 

    The signals are in no way a threat to observing (they are far weaker 
than the typical satellite broadcast), but it would be perhaps 
illuminating to find their origin.