[evlatests] Freq offsets at X, K bands.

[Vivek Dhawan]

The data from Oct 14: X & K bands, RR, 1GHz = 0.128*8subb, 2 hours
data each. Cluster of 3 sources within ~5deg of a strong calibrator.

X band (non-imaging analysis): The phase wind vs. time, and phase
offset upon calibration transfer - roughly same as C band.
i.e. agreeing with Ed's note below based on images.

K band (""): hardly any sign of phase wind or phase offset after
transfer. i.e. K band actually looks better than X & C, though
the phases have more short-term jitter from atmospherics. This
is very confusing so I'm quitting for the day.

Neither X nor K show any sign of delay error, only the frequency
error, as before.



Ed Fomalont wrote:
> 
> C-band 4.8 GHz * 0.000078 = 374 KHz possible freq. offset
> X-band 8.4 GHz * 0.000034 = 285 KHz possible freq. offset

> ALSO
> the phases all constant across the entire frequency band at any one 
> time/baseline,
> regardless of the average phase offset.