[evlatests] More amazing phenomenology ...

[Walter Brisken]

You could use the unique "spectral fingerprint" of each antenna, as seen 
in the WIDAR autocorrelations and the on-line bandpass tool, to see which 
is which.  I forget -- does WIDAR give us autocorrelations now?  If not, 
please ignore.

-W

On Tue, 14 Jul 2009, Ken Sowinski wrote:

> On Tue, 14 Jul 2009, Rick Perley wrote:
>
>>    It looks like a slow slippage in phase tracking, which starts at
>> zero at the observation's beginning.  Antenna 25 is at N2, while antenna
>> 28 is at N8.
>>
>>        Ken has a theory ...
>
> Not a theory, an observation.  In early June when we were battling
> only the wobbles one of the things we did was to swap the connections
> of two antennas to station boards to see if the problem stayed with
> the slot or the antenna.  It stayed with the slot; and the two
> antennas were ea25 and ea28.
>
> I have now examined which antennas we think are connected to which
> station boards and find some confusion.  Tomorrow we should make
> some connectivity tests to be sure we know what is happening.  It
> is possible that delays, from which are derived fringe phase and
> frequency, intended for ea25 are being sent to ea28 and vice versa.
> A careful examination is needed.
>
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