[evlatests] High Frequency Sensitivity

[Rick Perley]

    A quick report on EVLA sensitivity at X, K and Q bands, from the
data taken last night in reference pointing, using aipsweights as our
indicator. 

    X-Band:  Antennas 13 and 16 have sensitivities quite comparable
to VLA antennas.  But antenna 14 is definitely poorer, especially on
the LCP side.  Receiver? 

    K-Band.  Antenna 16 is average (RCP) to excellent (LCP) compared to VLA
antennas.  Antenna 14 is poor(RCP) to average (LCP). 

    Q-Band.  Antenna 16 is pathetic, but this is surely an optics 
(subreflector)
issue.  Antenna 14 is below the median, but not so low as to attract undue
attention.   Ken notes it has a large collimation error, so probably 
there is a
subreflector alignment/rotation issue here also.