Assume you mean the SX-100 Mark 1A.? The manual and the schematic specifically for the SX-100 Mark 1A are on BAMA, but I¡¯ve attached them for your convenience.? Are these incorrect?
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73 ¨C Steve, KW4H
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From: <[email protected]> on behalf of RJ Mattson <wn2ami@...> Reply-To: <[email protected]> Date: Wednesday, October 12, 2022 at 3:01 PM To: <[email protected]> Subject: Re: [HallicraftersRadios] SX-110 History
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I have a SX-110?which I acquired?used from Harrison Radio, NYC in the early 1960's. The top of the chassis is stamped:?Mark 1A
That is all I could afford back then with a paper route salary.
I just refurbished/aligned my old novice buddy.
Amazingly, it is hot with 20uv range sensitivity.
All the bumblebee caps were either shorted or high leakage.
All the carbon resistors were found to be within 11% tolerance
All the?tubes are Hallicrafters brand and test new,
The original dial cords worked a month, frayed and now need to be replaced.??
The free SX-110 manuals found at many online sites differ from my Mark 1A.?
The RF alignment was difficult because the alignment locations did not match the available manual pictorials.
The Mark 1A has the same tube lineup but some circuit values and locations have?changed.
