[R-390] Broadcast Band On Other Bands

[blw]

> My R-390A was operating normally on 3870 but after a fairly loud audio click
> overlapping local broadcast stations could be heard.  With some tuning
> around these "stations" occur at various places on several bands, noteably
> the 3, 13,14,15 Meg bands, maybe others.  It's hard to tell if the selected
> frequency is being received.  The 1 to 2 Meg band seems OK.
> 
> Ideas before the trouble shooting begins?
> 
> Mike VE7MMH


Mike,

This makes me think of several things. First, I sometimes get a sudden pop
of louder audio especially if I've had the radio parked on a frequency for a
long time. Something seems to open up somewhere for full audio. It has been
going on for a few years now. Turning up the RF Gain usually gives me full
audio again, or turning the MC Change knob up or down a band will do it. I'm
pretty sure that the racks are moving loose enough to not bind like they do
on my other one. Sometimes I get the impression that crud on the Local Gain
and RF Gain pots is causing the problem.

Maybe some of these stations are harmonics?



Barry