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Thread: siltronix 1011d mod info

  1. #11
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    Jun 2019
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    pace, fl
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    Id have to say I'm not really sure what we are supposed to see. Do you have an annotated schematic for it?
    nosaj

  2. #12
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    Sep 2019
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    Flat Rock, Michigan
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    Hi, Oklahoma: It looks like the factory mod for a solid state balanced modulator. It replaced V13, the 6JH8 Beam Deflection tube during the last production runs of the 1011D. Unfortunately, there is no factory documentation that I can find, but the device they used appears to be a Motorola MC1496, or a National Semiconductor LM1496 balanced modulator DIP. If you lookup the spec sheet for the device, you should be able to use the design examples as a guide as to how the circuit board is wired, and how it's wired into the radio. Yours is the first example I've ever seen. Good luck, and please post what you find out. Tnx!

  3. #13
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    Apr 2021
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    Thanks for the response, It eases my mind somewhat. I will explore MC1496 and LM1496 for information to see if I can find how the board is wired. I finished rebuilding the power supply and am am about ready to start alignment and tuning.
    Again-Thanks DKO39 for the response

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