[R-390] BFO question

[William A Kulze]

> BFO does not work, there is no calibration tone in the R390's audio but I
> can hear it from the SBA-1 side band adapter, I can see a calibration
> carrier in the signal strength meter on the R390.  The tubes on the IF/RF
> module test good, if I can trust my tube tester that is.


Ken, the bfo on my unit didn't work when I got it. I could hear a very
high freq tone, but it didn't change when the knob was turned. The can had
the label that said don't open the can, but I figured hey, it doesn't work
now, what the heck. Turns out the slug had come loose from the shaft and
was just sitting in the tube. I glued it back in place and it was just
fine after calibration. The chassis was bent on one back corner, so I
figured it was probably dropped. If this isn't the case with yours, maybe
it might help somebody else someday.

Bill