[evlatests] ea23 returns, slowly

[Gordon Coutts]

Bob,

Please substantiate claim (4) with data.

Regards,

Dr. Gordon M. Coutts, PhD
Associate Scientist, Research Engineer
National Radio Astronomy Observatory


On Sep 6, 2011, at 4:32 PM, Bob Hayward <rhayward at nrao.edu> wrote:

> Chuck Kutz wrote:
>> The Ku receiver is waiting on Hayward for test.
>> 
> 
> And Hayward has been...
> 
> 1) testing & debugging the first L-Band Solar Receiver, slated to be 
> installed on Ant 24 in less than 2 weeks.
> 
> 2) testing & debugging the latest upgraded VLBA C-Band receiver, slated 
> to be shipped to Brewster on Sept 19th.
> 
> 3) testing & debugging the new improved EVLA-style C-Band receiver, 
> which has a new thermal gap assembly from the VLBA installed in it (that 
>  will knock about 5K off the T(rx) at the low-end) and which needs to 
> be ready by Sept 19th when we have a couple of engineers visiting from 
> Arecibo who want to look at the receiver (and hopefully buy one).
> 
> 4) sorting out annoying axial ratio problems in the C-Band polarizers 
> (it seems all OMTs may not be created equal).
> 
> 5) preparing for Thursday's "Dog & Pony" show.
> 
> 6) and writing stupid memos like this.
> 
> I'll try to fit the Ku-Band S/N 15 receiver testing in when I can find 
> the time over the next few days - unless someone wants any or all of the 
> above dates to slip.
> 
> -Bob
> 
> 
>> -----Original Message-----
>> From: evlatests-bounces at nrao.edu [mailto:evlatests-bounces at nrao.edu] On
>> Behalf Of Ken Sowinski
>> Sent: Tuesday, September 06, 2011 3:18 PM
>> To: Ken Sowinski
>> Cc: evlatests at aoc.nrao.edu
>> Subject: Re: [evlatests] ea23 returns, slowly
>> 
>> On Tue, 6 Sep 2011, Ken Sowinski wrote:
>> 
>>> X and L band receivers are not yet installed
>>> S band works
>>> C band works, but the polarizations are backwards
>> 
>> C band cables have been reversed; pointing will be done tonight.
>> 
>>> Ku band rotation setting is unknown
>> 
>> A rotation setting has been provided, but there seems to
>> be no receiver.  the downconverters show no power at Ku band.
>> 
>>> K band works, but is very weak, probably because of poor pointing
>>> Ka and Q bands not examined
>>> 
>>> If C band cables are swapped today we can do pointing tonight.
>> _______________________________________________
>> evlatests mailing list
>> evlatests at listmgr.cv.nrao.edu
>> http://listmgr.cv.nrao.edu/mailman/listinfo/evlatests
>> 
>> 
>> _______________________________________________
>> evlatests mailing list
>> evlatests at listmgr.cv.nrao.edu
>> http://listmgr.cv.nrao.edu/mailman/listinfo/evlatests
> 
> _______________________________________________
> evlatests mailing list
> evlatests at listmgr.cv.nrao.edu
> http://listmgr.cv.nrao.edu/mailman/listinfo/evlatests