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Recent content by epkoncept

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    Sams PhotoFacts Collection

    Dan: wow, that was quick. Thank you very much again. I had picked up the 5 a year ago for free at a local amateur radio club meeting. I had already re-capped about half of the electrolytics already. Got the audio going but I recently noticed that the squelch wasn't working poorly. If I turn the...
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    Sams PhotoFacts Collection

    dan: I am looking for service info and the schematics for a Lafayette Dyna-Com 5 Peter PS with your help, my Dyna-Com 23 is doing much better.
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    Lafayette Dyna-com 23 schematic

    I noticed that rx sensitivity changes significantly with voltage. from 11--> 16V Has anyone noticed that ? P
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    Lafayette Dyna-com 23 schematic

    After a little experimenting, I noticed that the audio gain was low and a little distorted. C55 33uF-->4.4uF, C58 33uF--> 1.6 uF Replacing these two caps raised the audio gain as expected. Distortion gone While I was in there I also replaced C35 10--> 9.2uF C37 33-->4.5uF C64 1 --> 1.3uF C65...
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    Lafayette Dyna-com 23 schematic

    Did you find a 70mm dia 100 ohm speaker ? Or are you going to stuff another transformer inside the unit?
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    Lafayette Dyna-com 23 schematic

    so excited over the past few days, I forgot to provide an update. The Dyna-Com 23 arrived on Wed. The 3" loudspeaker was blown open. Interestingly, testing with a Megger set to 250V managed to bring the resistance down from 10's of meg ohms to about 1000's ohms. I then put about 10mA of DC...
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    Lafayette Dyna-com 23 schematic

    Dan: thank you very much for posting the pdf of the remainder of the info on the Dyna-Com 23. I hope the odd ball final transistors are good, 2SCF6 and 2SCF8. Never came across JP transistors with such a short number. P
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    Lafayette Dyna-com 23 schematic

    Dan: I just bought a Dyna-Com 23 and I should have it a few weeks. If there are other pages in the document you have, would you be able to post them if its not too much trouble ? Sincerely Peter
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    Lafayette Dyna-com 23 schematic

    dan: sorry, senioritis struck again. I was thinking of a more modern radio syn, I forgot that a long time ago, radios used banks of crystals to mix pairs of xtals to synthesize the 23 channels. https://www.cbcintl.com/XTALS/AM%2016965-9545-1000.pdf Thank you
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    Lafayette Dyna-com 23 schematic

  11. E

    Lafayette Dyna-com 23 schematic

    thank you for posting. Are there more pages of the schematics ? I don't see the synthesizer portion ? Sincerely P
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