[evlatests] Switched Power Compression?

Rick Perley rperley at nrao.edu
Thu Oct 20 11:38:53 EDT 2011


    Unfortunately, I confused the bands when I reported that the PDif 
compression at C-band on ea24 had disappeared.  I was looking at the 
X-band data at the time (which never showed the problem and still 
doesn't).   In fact, at C-band, the PDif compression in LCP when 
observing Cygnus A is as bad as it ever was -- nearly 50%!!!

   

Jim Jackson wrote:
> Antenna 24 has a different T302 LSC converter than before.  It now has 
> the modified one with all of the filters added to it so it will be 
> interesting to see if it behaves any differently than the other antennas.
>
> Unfortunately, the T302 that came out of 24 could now be anywhere 
> since we didn't realize anything was wrong with it. If you suddenly 
> see the same strong compression on RCP in another antenna, let us know.
>
> Jim
>
>



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