[evlatests] Current P-band state

Rick Perley rperley at nrao.edu
Thu Oct 18 17:29:14 EDT 2007


    The P-band status on the EVLA remains poor. 

    EVLA antennas 14, 17, 18, 19, and 23 are close to nominal 
sensitivity on most IFs.   The exceptions amongst these are all on the 
(A,C) side (IF#1). 
    EVLA antennas 11, 21, 24, and 26 all show very poor sensitivity, 
generally low by a factor of 4 or more in apparent efficiency.  26B and 
D give no fringes at all.   (Antenna 21 is definitely better than prior 
to Walter's attenuator adjustment, but remains weak by a factor for four 
or more on all IFs). 
    EVLA antenna 25 gives no fringes on any IF. 
   
    There was no 'global' phase jump between the two P-band scans. 

   

   



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