[evlatests] antenna 18 x-band: poor sensitivity

[Charles Kutz]

It appeared to be ok about a month ago. We are sending teams out to all 
arms today checking/verifying all EVLA feed heater operations. We will 
take special note of 18.

Chuck

Emmanuel Momjian wrote:
> The test observations of yesterday (Nov. 26) showed that the sensitivity 
> of antenna 18 at x-band and at all IFs is low by a large factor due to 
> high system temperature values, which are between 140 and 190 K.
> 
> 
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