[R-390] Break in function

[Jim Brannigan]

I used an R-390A as a second receiver with a Collins S-line driving a 2KW
amp.
There was never a problem with bleed through or over load when using the
break-in function.

Jim


> You will still have to turn the RF gain down to keep a
> T-368 in the same room from registering on the carrier
> meter when on the same freq.
>
> Joe
>
>
> --- David Wise <David_Wise@Phoenix.com> wrote:
> > > From: Roy Morgan [mailto:roy.morgan@nist.gov]
> > >
> > > At 06:39 PM 3/11/03 -0700, Kenneth wrote:
> > >
> > > > The above radio is hooked to a Johnson Viking II
> > through a
> > > > TR relay.  It
> > > > (the antenna relay) does the antenna switching
> > and it has
> > > > additional connects which I  use to operate the
> > break in
> > > > function on the
> > > > 390A. ...  My question
> > > > concerns the break in relay in the 390A does it
> > just disconnect
> > > > the antenna, and mute the receiver.  Is the
> > speaker muted as well?
> > >
> > > Ken and others,
> > >
> > > Some time ago I wrote a detailed description of
> > the break-in
> > > function, with
> > > part numbers and such. I can't find it just now
> > but here are
> > > the basics for
> > > the R-390A:
> >
> > [snip]
> >
> > The R-390A antenna relay pulls in to mute.
> > My '54 Motorola is sticky, doesn't always
> > pull in completely in spite of normal coil
> > voltage.  I'll get to it soon.  You might have
> > the same thing.  Hook up a decent amount of antenna.
> > In CAL mode, can you hear stations?  You should not
> > hear anything, not even faintly, except the
> > calibrator.
> >
> > 73,
> > Dave Wise