[evlatests] ea16 status

[Wes Grammer]

A quick, real-time update on ea16 receiver status:

1. L-band output cables have been swapped, to correct the polarization 
problem.

2. We've been unable to cool the S-band RX since ea16 went online last 
week. Cryo is here right now, checking the vacuum distribution system 
for leaks - there wasn't an obvious problem with the receiver itself.

3. The X-band feed did have a substantial amount of water inside. We 
dropped the receiver and radome cover to drain and dry it out. Before we 
leave, we'll reseal it and verify the dry air system is working.

At this point, all 7 other cryogenic receivers are cold and appear to be 
functioning normally.

-Wes


On 7/15/2014 11:15 AM, Ken Sowinski wrote:
> On Mon, 14 Jul 2014, Ken Sowinski wrote:
>
>> a16 is on the master pad and is beginning to work.
>>
>> Current problems:
>> 1.  L band ploarizatios are swapped
>> 2.  S band fringes are weak; perhaps the rx is warm.
>> 3.  No fringes at X band; more water?
>>
>> A pointing run is needed.  That can be doen at C band tongiht if
>> the antenna is still working at the end of the day.
> Tilt for ea16 was determined from the pointing run of last night,
> so the antenna may be moved whenever desired.
>
> I have not yet verified that any of the problems listed above have
> been remedied.
>
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