[evlatests] ea19, LCP, c-band

Wes Grammer wgrammer at nrao.edu
Fri Mar 20 17:38:33 EDT 2015


Sure does seem like the right length for the cable between the receiver 
and LSC Converter. Maybe it's loose or damaged at one end? I'll ask John 
M. to check.

On 3/18/2015 8:40 AM, Rick Perley wrote:
> In analyzing the 'ACU' test data from yesterday, I find that ea19 has 
> an enormous oscillatory bandpass function in both amplitude and phase, 
> in LCP only, at C-band only.  The periodicity is about 12 MHz, 
> suggesting a standing wave caused by a reflection of length ~ 12 meters.
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