[Hallicrafters] Aligning a S-76

[Chris Farley via Hallicrafters]

Grant is absolutely correct, they want you measuring voltage on the AVC line (with the AVC switch "off") at the junction of R48, R50, R51, and C51.  Sam's also suggests to remove the 1st Osc tube (V3) for the 50kc IF alignment.  I will snap a photo of the alignment instructions and send it to you directly.  (Pretty sure this list strips attachments?)
Additionally, this is Sam's set 143 folder 9 if you have access or can find it online someplace.  
Regards, Chris kc9ieq


Sent from my SMRTphone

-------- Original message --------
From: GRANT YOUNGMAN <nq5t at tx.rr.com> 
Date: 08/07/2015  7:49 PM  (GMT-06:00) 
To: Chris Farley <kc9ieq at yahoo.com> 
Cc: Ken And Susan Hittson via Hallicrafters <hallicrafters at mailman.qth.net> 
Subject: Re: [Hallicrafters] Aligning a S-76 


I think that measurement point is on the AVC line, not audio.  And no, there shouldn’t be any audio output from the speaker — all that misdirection may be because they simply want a load on the output  transformer.

Grant NQ5T


> On Aug 7, 2015, at 6:30 PM, Chris Farley via Hallicrafters <hallicrafters at mailman.qth.net> wrote:
> 
> 
> 
> Perhaps I'm missing something, but I don't think you should be hearing anything from the speaker during IF alignment...  Are the alignment instructions telling you to measure the audio output, or an RF voltage ahead of the detector?  I'll see if I have a Sam's on the S-76 when I get home...
> Regards, Chris kc9ieq
> 
> 
> Sent from my SMRTphone
> 

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