[R-390] Audio and BFO

[DJED1 at aol.com]

Don't know about the BFO- could be a lot of things.  Start with  
checking/substituting tubes, then go on to checking voltages at the BFO and  detector.
As for the audio, I've seen similar problems with a broken pot.  Also,  
check the grounding of the bottom lug on the audio pot.  you should be able  to 
find a replacement pretty easily.  Or, like I did on my Drake Rx, I  
disassembled the pot, used a little conductive paint to fix the break, and it's  
been fine. (the Drake pot was unobtainium).
Ed