[Hallicrafters] S-76 Weak BFO

[Langston, Mike]

I had a problem with an SX-101A. SSB/CW volume significantly lower than
AM. Other than that it worked fine but I'd have to crank up the audio
gain. Suspected BFO circuit. All component values checked ok but
voltages at detector pins were weak from BFO. Long story short, someone
had installed a BFO coil/cap can from another rig (I think an sx-117). I
pulled one out of a SX-96 parts rig (same values as SX-101A) and that
was it. Plenty of BFO then and audio where it should be. I'd check the
capacitor across the BFO coil in the can. You may have to take the can
out of the chassis to change that cap (sometimes 2 caps in parallel, one
being temp. comp.) Good luck.

Mike KL7CD
Dallas-Ft. Worth
-----Original Message-----
From: hallicrafters-bounces at mailman.qth.net
[mailto:hallicrafters-bounces at mailman.qth.net] On Behalf Of
W3HKK at aol.com
Sent: Friday, January 21, 2005 12:17 PM
To: hallicrafters at mailman.qth.net
Subject: Re: [Hallicrafters] S-76 Weak BFO

Im having a similar problem with my S76.  Just began  restoring it this
week 
and would appreciate any suggestion on how to raise the  level.
 
FYI I just did a realignment and BFO adjustment  so Im  suspecting
issues 
with the  capacitors/resistors in the circuit  changing values.   ??
______________________________________________________________
Hallicrafters mailing list
Home: http://mailman.qth.net/mailman/listinfo/hallicrafters
Help: http://mailman.qth.net/mmfaq.html
Post: mailto:Hallicrafters at mailman.qth.net
----
List Administrator: Duane Fischer, W8DBF **for assistance**
dfischer at usol.com
----
Hallicrafters Collectors International: http://www.w9wze.org