[evlatests] Quick P-band test -- swapped polarizations ...

Paul Harden pharden at nrao.edu
Fri Feb 14 12:25:52 EST 2014



On 2/14/2014 9:45 AM, Rick Perley wrote:
>      Some data were taken last night.
>
>      *   ea06, ea13, and ea25 have swapped polarizations.

We swapped polarizations on EA13 on Tuesday to correct.  Still swapped? 
  EA25 got a new receiver Tuesday - don't know how we swapped 
polarizations but will correct early next week.  Dan and I will also be 
at EA06 next week (see below)

>      After things are straighted out (via software), we find:
>     *    ea06, ea12, and ea16 are very weak (down 6 to 10 dB) in 'RCP'
Dan and myself *were* going to replace the receivers on EA06 and EA16 
today (Friday).  However, with the antenna moves and another antenna 
down for maintenance, the site is already on the 3-antenna rule.  Dan 
and I will try again Tuesday.  We'll swap polarizations on EA06 when we 
put in the new receiver.

EA12 weak RCP is new information we'll check.

Thanks for the update.

Paul



More information about the evlatests mailing list