[evlatests] L302 and phase spins.

[Barry Clark]

I do not believe Vivek's conclusion that 

>    The FR on a given antenna, (when it spins at all) matches
>    (FR_1 - FR_2) the difference in FR for the 2 sources,

The fringe rate difference between two sources is a smooth sine wave with
24 hour period.  The FRING outputs that Vivek was showing are incompatible
with a smooth sine wave of 24 hour period.  It's about right but not
exactly.