[evlatests] K-band compression?

[Rick Perley]

    At this band, the contribution for Taurus A is quite small -- only 
~10K, due to the small primary beam.  This is only a ~15% change in 
system power, so we should not expect to see much 'PDif Compression' -- 
and we don't -- but there are some notable exceptions.  I list here only 
those antennas for which a significant compression was observed.  
Frequencies tuned were 19.4 and 25.4 GHz on the BD and AC sides, 
respectively. 
   
    ea09, B and D:  98
    ea11 B and D:   95
    ea14 B and D:   96
    ea15 B and D:   99
    ea16 B and D:   97
    ea17 B and D:   97
    ea18 B and D:   97
    ea20 B and D:   96
    ea22 B and D:   97
    ea27 B               98
    ea28 B and D:  98

    No discernible compression was seen on the AC side.  This was set to 
the higher frequency, where the power increment from the source is much 
less.