[R-390] BFO Problem/Question for a newly restored R-390A

[ToddRoberts2001 at aol.com]

In a message dated 2/11/2006 8:06:43 PM Eastern Standard Time, 
ccurran at wi.rr.com writes:
Here is my question, sorry for the long diatribe.  Should I start turning
the BFO shaft until I achieve a tone at the expected points?  Is this shaft
on a threaded adjustment, with 3, 4, or 5 turns possible so I can achieve
this? 

The BFO is a multiturn device good for about 2 1/2 - 3 full turns from 
end-to-end of its tuning range, but do not try to force it past its stops, be very 
gentle with it as soon as you meet any resistance trying to turn the shaft. I 
get plenty of signal pickup for a frequency counter by wrapping 5-10 turns of 
wire around V504 and connecting one end of the pickup coil to the freq counter 
probe tip. Be sure to turn down the RF gain if using this method or else other 
IF signals across V504 can give false readings instead of the BFO frequency. 
Some freq counters may not have enough sensitivity when using the pickup coil 
method around V504 so try whatever works best for you. 73 Todd WD4NGG.