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Hallicrafters S-53a and S-107

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Hallicrafters S-53a and S-107 Empty Hallicrafters S-53a and S-107

Post by 75X11 on Wed Aug 05, 2015 10:11 am

Does anyone know a reasonable source for schematics for these radios that also isn't radiomuseum? Thanks.
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Hallicrafters S-53a and S-107 Empty Re: Hallicrafters S-53a and S-107

Post by Guest on Wed Aug 05, 2015 10:44 am

http://bama.edebris.com/manuals/hallicra/s107/

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Hallicrafters S-53a and S-107 Empty Re: Hallicrafters S-53a and S-107

Post by Guest on Wed Aug 05, 2015 10:46 am

http://jptronics.org/Hallicrafters/manuals/halli.s-107.pdf

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Post by Guest on Wed Aug 05, 2015 10:46 am

http://jptronics.org/Hallicrafters/manuals/halli.s-53a.pdf

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Hallicrafters S-53a and S-107 Empty Re: Hallicrafters S-53a and S-107

Post by 75X11 on Wed Aug 05, 2015 12:22 pm

Thanks so much!
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Post by Guest on Wed Aug 05, 2015 1:41 pm

You're Welcome! Very Happy

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Hallicrafters S-53a and S-107 Empty Re: Hallicrafters S-53a and S-107

Post by 75X11 on Wed Aug 05, 2015 2:40 pm

One reason I asked was because of a article I saw that gives some values of replacement caps to use in the IF xfmr assemblies to replace the originals so as to clean house of the failure prone components.

http://www.ohio.edu/people/postr/bapix/S-107.htm
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Post by 75X11 on Tue Jun 14, 2016 10:04 pm

I'm about halfway through re-capping the S-107, having started it last Sunday when it was hotter than hot outside. I had forgotten about the IF xfmr reference in this thread. The part number stamped on the can is the one for the 1st and 2nd IF stages in the radio. I want to get it up and running to see what it will do on my antenna out back. This radio is very sensitive and I was able to get a lot of traffic on just a 20 inch long stiff vertical copper wire.
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Post by 75X11 on Fri Jun 24, 2016 2:17 pm

I've received the micas of the value given in the treatise on SMD in these and am still awaiting the elyts. Just got notice that the label was created. I'll try finishing the paper caps shortly. I'm sure it had a filter cap failure, the unit just started a nasty 60Hz hum before the last shut off.
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Post by 75X11 on Sun Jun 26, 2016 12:18 pm

Well I raided the caps I had for other projects and finished the S107.  I did 3 alignments.  There is no SMD.  That having been said,  It is unfortunate or fortunate to have to say that the S-107 does not perform as well as the shortwave receiver in my Magnavox.  I guess the latter is more attuned to full audio range listening than the voice and CW ranges of the S-107.
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