[R-390] R390 Back Panel Outputs Corrected Copy

[Don Heywood]

Hello to the group

I have just received another R390 to restore for my collection (like we need
more). On the back panel just above the pin straighteners and near the tool
holders are two added female BNC connectors which were professionally added.
Penciled near one is "PAN OUT" and the second has X UA IN with grease
pencil.
This radio reportedly came from an AFB in TX and was used in a "special"
area according to the seller. I have an idea about PAN OUT, but could
someone explain what the X UA IN note could mean. The cables are connected
as follows:

PAN OUT goes to the RF deck thru RG-58 to an SMA connection near the back
left green screw.
X UA IN goes thru a small cap to a BNC TEE with the Calibrator output.

Thanks,

Don Heywood
WC4G, Charleston, SC