[evlatests] status, Sept 11 2006

[Steven Durand]

Ken
We will go look at 18s X Band again on Wed.  maybe there is a leak

Do you think 16s C band has water in it too?

The switched power on ant 13 for bands L X Q all operate off the same 
power supply so it is possible that the power supply is sad.  But C band 
has its own power supply so if the SD problem includes C band then we 
should look at timing.  If Not then we need to look at something else. 
Ken did your data include C band?

Ken Sowinski wrote:
> Rob visited antenna 24 this afternoon.  Afterwards AC was OK
> and BD was bad which leads me to guess that he swapped L302s.
> 
> Other antennas.
> 18 is bad again at X band so the attempts at sealing did not
> make much difference or, as Jim suspects, is just about
> impossible to get all the water out.
> 16 is not bad, but not too good at C band.
> 13 still has erroneously low SD voltage causing the amplitudes
> to be grossly misscaled.
> 
> I tried to check focus, but learned that it is time to upgrade
> some of the Modcomp software.
> 
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-- 


Steven Durand, MTS               National Radio Astronomy Observatory
Electronics Division             1003 Lopezville Road
505.835.7103                     Socorro, New Mexico  87801