[Hallicrafters] Aligning a S-76
Chris Farley via Hallicrafters
hallicrafters at mailman.qth.net
Fri Aug 7 19:30:12 EDT 2015
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
-------- Original message --------
From: Ken And Susan Hittson via Hallicrafters <hallicrafters at mailman.qth.net>
Date: 08/07/2015 4:57 PM (GMT-06:00)
To: "Charlie T, K3ICH" <pincon at erols.com>
Cc: "<hallicrafters at mailman.qth.net>" <hallicrafters at mailman.qth.net>
Subject: Re: [Hallicrafters] Aligning a S-76
Hi Charlie
I have been procrastinating on the doghouse. I see two shielded leads and a couple of cloth wires to be disconnected to get it off. But I can't put it off any longer.
The alignment part is the thing that is baffling me. If I do not use a .01ufd cap between the sig gen and the pin 1 of the if can, (even though the manual does not describe that) I am connecting to 275vdc, and certainly going to burn something up. I am injecting 50kc unmodulated signal, but get no speaker output. I do at 1500kc, and at all of the dial calibrations.
Thanks Ken
> On Aug 7, 2015, at 12:58 PM, Charlie T, K3ICH <pincon at erols.com> wrote:
>
> Have you replaced the caps inside the little top-of-chassis converter box?
>
> I found most of them leaky as well as a couple WAY out of spec resistors.
>
> 73, Charlie k3ICH
>
>
> -----Original Message-----
> From: Hallicrafters [mailto:hallicrafters-bounces at mailman.qth.net] On Behalf Of kenneth hittson via Hallicrafters
> Sent: Friday, August 07, 2015 1:44 PM
> To: Chris Farley <kc9ieq at yahoo.com>; Ken And Susan Hittson via Hallicrafters <hallicrafters at mailman.qth.net>
> Subject: Re: [Hallicrafters] Aligning a S-76
>
> Chris
> Yes, sorry 50khz.
> Thanks
> Ken
>
> -----Original Message-----
> From: "Chris Farley via Hallicrafters" <hallicrafters at mailman.qth.net>
> Sent: 8/7/2015 10:21 AM
> To: "Ken And Susan Hittson via Hallicrafters" <hallicrafters at mailman.qth.net>
> Subject: Re: [Hallicrafters] Aligning a S-76
>
>
>
> Hopefully just a typo, but.. You mean 50kHz not 50Hz, right?
>
>
>
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