[R-390] unstable BFO note on R-390A

[John Lawson]

   Bob - it might be a Good Thing to check the output of the PTO for any 
unstable FM - if the radio cannot hold a stable setting in the .1 Khtz BW 
position, with the BFO off - the problem is maybe in the main frequency 
determining circuits, I would think...

   However if the tuning is stable with the BW set to .1, and the BFO off - 
of course this can be checked against WWV - but starts jumping around when 
the BFO is turned on, then it's as you surmise - the BFO itself has gone 
wonky on ya.   Could there be gunk in the BFO variable capacitor? Husks of 
long-dead spiders?


Cheers

John
KB6SCO
DM09fg