[Hammarlund] HQ-129x recap

[Carl]

I usually wind up with 2-3 leaky micas in the 120/129. The BFO coupling cap 
is increased for better SSB and can be 47-100pf depending upon what point it 
affects the AVC and reduces sensitivity.

I use a 120/129/140/150 (I rotate them as the main radio) often in one setup 
with a Viking I and like to be able to quickly switch to SSB when some 
slopbucketeer is trying to cause problems. Thats when the big amp comes on!

Carl
KM1H



----- Original Message ----- 
From: "William A Kulze" <wak9 at cornell.edu>
To: "Carl" <km1h at jeremy.mv.com>; <hammarlund at mailman.qth.net>
Sent: Thursday, August 11, 2011 10:17 AM
Subject: RE: [Hammarlund] HQ-129x recap


Perhaps I shouldn't call this a 'complete' recap. I only replaced the paper 
caps. Do the micas have a problem with aging? I've got a fluke that can 
measure the value, but it obviously won't show leakage. I've got an old 
IT-28 heathkit, but it needs a 6ax4. If I can't get rid of the offset in 
freq it probably won't be a big deal. The radio has the little xtal 
calibrator installed so I can at least get it to the nearest 100kc point.

Bill W2NVD

-----Original Message-----
From: Carl [mailto:km1h at jeremy.mv.com]
Sent: Thursday, August 11, 2011 9:55 AM
To: William A Kulze; hammarlund at mailman.qth.net
Subject: Re: [Hammarlund] HQ-129x recap

Did you get the caps under the BFO cover? Many miss those.

Check the banspread cap runout, it may not be perfectly centered or someone
messed with the rotor plates.

Carl
KM1H




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