[evlatests] partial coherence = sideband flippers

[Barry Clark]

Strongly suggestive indeed, but I don't understand why it would leak
only on one side and not the other.

Vivek Dhawan wrote:
> Based on discussion with the experts, I re-examined the data with partial
> loss of coherence. I think it shows that the affected data has the correct
> delay and rate, but the wrong sideband - a filter rolloff is visible over
> ~12MHz, beyond which the suppression is >~ 40dB.  This was in data 
> switching
> between C and X band.
> 
> The time plot shows the problem, which can hit a single antenna+subband. It
> is rare, this plot is a distillate. The second plot shows the spectra for a
> short time.
> 
> Vivek.
> 
> 
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