[Boatanchors] NC 173 BFO

[Troglodite at aol.com]

Ron,
 
There are a couple of possibilities. Assuming you have already checked the  
coil and it is good, I would look very carefully at the capacitors you have  
replaced around the BFO circuit, and make sure they are all in the right place.  
Second thing to check is the value of the resonating capacitor across the 
coil,  if you have replaced it. Sometimes reading the values on those old Black  
Beauties or Mica caps is a challenge. It could be that the BFO is oscillating 
-  but way off frequency. Check it with a scope or grid dip oscillator in the  
wavemeter mode. Good luck.
 
Doug Moore
 
In a message dated 6/27/05 7:47:51 PM Central Daylight Time, w6om at cox.net  
writes:

>Restoring a NC 173, re-capped it, replaced the usual items and  tubes but 
cannot get the >BFO to work.  Looked at the schematic until I  am cross eyed, so 
perhaps I am missing >something. Anyone have a similar  experiance or 
suggestion of where to dive in?