[mmaimcal]ATF Evaluation Receiver performance

[Harvey Liszt]

Barry and I can't see these, they are confidential.

H.
-------------------

Al Wootten wrote:
> 
> Folks,
> 
> I had a chat with Antonio today on the performance of the evaluation
> receivers for the ATF.  They should be very good indeed.  There is a
> table at:
> http://almaedm.tuc.nrao.edu/forums/alma/dispatch.cgi/atfapproveddocs/showFile/100331/d20031010051106/No/Main%20specifications%20for%20the%20evaluation%20frontends.pdf
> and graphs of performance across the band at:
> http://almaedm.tuc.nrao.edu/forums/alma/dispatch.cgi/atfapproveddocs/folderFrame/100244/0/def/3337
> but to summarize:
> These are good receivers!
> 'Band 3' 85-105 GHz dual polzn, SSB 8GHz IF USB but some degradation on
> the outer 20%; HEMT amplifiers so 1/f stability an issue for total power
> continuum. Trx 80K.
> 
> 'Band 6' 215-270 GHz single polzn DSB 2 GHz IF; SIS mixer.  Trx 70K or
> so, varies with position in the band.
> 
> Gain stability is also of interest and has been published:
> http://almaedm.tuc.nrao.edu/forums/alma/dispatch.cgi/atfapproveddocs/folderFrame/100248/0/def/3337
> 
> Clear skies,
> Al
> 
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