[R-390] RE: 390A relay problems

[David Wise]

> notice if I switch 
> >past standby and go right to AGC, it immediately pulls right in,

This sentence indicates a misunderstanding on the part of
the speaker.  The R-390A antenna relay grounds/disconnects
the input when it's picked, and enables/connects the input
when it's dropped.  In STANDBY and CAL, it's picked; in
AGC and MGC it's dropped.  The "pulls right in" is actually
the half-picked relay dropping, not a successful pick.
Those old rectifiers always go bad; put it out to pasture
and install a silicon bridge.

Dave Wise