[R-390] BFO Pitch

Kenneth G. Gordon kgordon at moscow.com
Tue Nov 23 12:27:57 EST 2004


KA4PRF wrote:

> Hi again,
> 
> I had the IF subchassis out of my R390A last week to check 
> underneath to see if there were any problems i.e. burnt 
> resistors etc.  There weren't.  Anyway, I had inadventently 
> turned the BFO Pitch shaft when it wasn't hooked up and 
> consequently I think my pitch maybe off.  Anyone know the 
> proper procedure for adjusting the Pitch WITHOUT instruments 
> before connecting it back onto the knob?

What has always worked pretty well for me is to set the selectivity at 
one of the narrower positions, but usually not the narrowest, tune in a 
place with NO SIGNALS, turn the BFO on, turn up the RF and AF gain 
so I can hear a lot of band hiss,  and adjust for lowest pitch.

Ken W7EKB


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