[evlatests] P-band Status (observational)

[Dan Mertely]

We should keep in mind that ea17 in inoperative because it does
not have apex wiring.  (This is the latest antenna which twisted
out it's apex wiring due to a seized bearing (back in early Oct.
It has not been rewired yet, but we probably need to do so soon.)
-Mert


On 11/21/2013 10:53 AM, Paul Harden wrote:
>
>
> On 11/20/2013 5:14 PM, Rick Perley wrote:
>>       Another test was run last night.  The data (with few exceptions) are
>> of superb quality.
>>
>>       Here are the issues found:
>
> Thanks for the valuable feedback, Rick.  I have updated the low band
> status based on your findings on the LBR website, which will determine
> imminent maintenance actions.
> http://www.aoc.nrao.edu/~pharden/LBR/lbr.htm
>
> I am completing the build of two spare receivers.  Those will likely be
> installed into EA17 and 25, with a new CAL board, to correct the
> gain/Tcal/CAL switching problems on those antennas, and no fringing on
> EA17.  New CAL boards will also be installed in EA11 and 19, and the
> other antennas with noted CAL switching problems checked.  This will
> completely purge the old prototype electronics from the system.
>
> Dan, Taylor and I are hopeful that we can clean up a lot of these major
> issues in the next two weeks for you and Frazer.  We'll keep you informed.
>
> Paul
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