[evlatests] 24 and 26

[Ken Sowinski]

With the help of the operator I was able to look at G/T
for all antennas including all the usable EVLA antennas.

Antenna 24 BD is bad at bands, down by a factor of four
or five in power from the AC side.  In the past at X band
I determined that this was not because of delays and that
the bandpasses look normal.  Since BD is affected, but
not AC, and all bands are affected, it just about has to
be the L302-2.

Antenna 26 does not seem to want to work at L or K bands;
it looks normal at X band.  No attemp was made to diagnose
this as Steve asked about it yesterday and said he would
track it down.

Antenna 23 BD still works.