[evlatests] Ku-band PDif compression from Taurus A (20 Aug)

[Rick Perley]

    At this band, Taurus A provides 15 to 20 K in additional system 
temperature.  So the increment is not very large. 
    Most antennas show very minor PDif compression, but there are a few 
notable exceptions.   The BD IF pair are in general less compressed than 
AC -- probably because it was tuned to a higher frequency (16.7 GHz, vs 
13.1)  At this frequency, the Ku-band primary beam is ~ the same size as 
the source. 

    The percentage compressions:

    01       96   100    95    98
    02      103   98    102    96
    03              no rcvr
    04        99    97    99    98
    05               out
    06        99    99    99    99
    07      100   100   100  100
    08             no rcvr
    09             no rcvr
    10                   out
    11       100  96   98   95
    12         96  100   96   100
    13       100  100   99   100
    14         98   98  101   95
    15             no rcvr
    16         95  100   96   98
    17         97  100  97   99
    18         99   97   97   98
    19         97   98   98   95
    20         99   99   94   99
    21         97   99   99   99
    22         97  100   95   99
    23         96  100   95   99
    24         99  100   94   98
    25         98   97  100  100
    26        100   98   99   97
    27                out (and no rcvr)
    28               no rcvr