[evlatests] ea17, failure to return to phase, and ea05, two different phase states

[Rick Perley]

    The 24-hour long calibrator run required the array to change band 
over 1000 times, each source being observed at all nine observing bands 
in rapid succession.  The permits a look at how well the system phase 
returns to the old value for any given band. 

    At both P-band and L-band (I haven't been able yet to check other 
bands), ea17 always returned to a random phase.  The phases within each 
short observation are stable.  The change of phase is the same in LCP 
and RCP (so the phase difference is fine). 


    A rather different problem is seen in ea05.  For this antenna, there 
appears to be two different phase values to which the system returned -- 
different by 25 degrees.  Both RCP and LCP show this difference.  This 
problem is not seen at P-band.  (I don't yet know about other bands).