[evlatests] EVLA antennas

[Ken Sowinski]

On Wed, 13 Sep 2006, Jim Jackson wrote:

> The following changes have been made to the EVLA antennas today:
>
> A T301 4P converter has been installed in Antenna 18 and (at least to us)
> appears to be working.  P band should be available.  4-Band should be
> available once the dipoles are installed.

There was a little time to look into this today.  18 seems to work at
P band.  Delays needed a little help but there were no obvious problems;
someone should have a look at it more seriously.  14 AC, however, did not
work because the L302 refused to lock at 14458.0625 MHz.

> The EVLA antennas have been switched over to the 5MHz signal from the VLA
> LO racks.  This will allow the EVLA to follow the VLA should a backup
> references be connected in the event of a MASER outage.  This added 20-30ft
> of cable to the 5MHz timing to the EVLA. We're not sure whether or not this
> will effect delays  but it could.

It should have no effect on delays, but resyncing all th antennas might.
In particular 13BD suffered a cery large delay change and is not yet
in order.  Was anything else done to 13BD?