[evlatests] P-band checkup update

[Rick Perley]

     A short note to emphasize that the ripple on ea28X is not new. It 
was in my earlier test (same level as in Frank's).  I neglected to 
report it...  (my bad).

     Rick

On 07/19/2016 12:03 PM, Paul Harden wrote:
>
>
> On 7/18/2016 3:43 PM, Frank Schinzel wrote:
>> 3) Previously unreported was that ea28X does not work very well, 
>> showing larger than 1 dB bandpass ripples. All other band passes look 
>> good. This could be a cable issue.
>
> The last bandpass plot on EA28 does not show any unusual ripple, so 
> will check it out locally asap, hopefully tomorrow.
>
>> 4) Very large cross-polarizations are still seen on some antennas, as 
>> previously reported by Rick.
>> The worst from this observation are: ea06, ea27, ea17, ea15
>> It would be great to look into the worst misaligned dipoles, of which 
>> none have the new style P-band dipole mounting jam nut and to 
>> identify the reason for the strong bandpass ripples on ea28X.
>
> Wednesday is maintenance day at the site.  Pending possible microwave 
> receiver swaps impacting transportation and resources, Sandra and 
> myself will make a strong attempt to visit the above antennas to 
> inspect the P-band dipoles for degree of misalignment, and will 
> schedule to try and get them realigned in the next week or so.  We'll 
> check out EA28 also.
>
> Paul
>
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