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  1. Gman

    Uniden Madison MB8719 All Channels 10 khz down

    Brandon7861, I know its late, but just realized YOU talked about paralleling two crystals for more pullability going higher in frequency. Need to give you credit for that one too. Your post did not go unnoticed!!! Thanks.
  2. Gman

    MaCo 300 amplifier

    Thank you Nomad.
  3. Gman

    MaCo 300 amplifier

    Ive not found a schematic showing this unfortunately. So is 1 transformer feeding 1 set of tubes and the other feeding the rest of the power tubes? Thats the only thing that makes sense to not overload just 1 transformer for all tubes.
  4. Gman

    MaCo 300 amplifier

    Why do some MaCo 300 amps have 2 power transformers? The 300M schematic, Im guessing is the mobile version (12v), showing 2 transformers, well the schematic symbol for 2 transformers, but I see other chassis' with 2 transformers yet a 120 vac ac cord. The 300B schematic, I can only assume is the...
  5. Gman

    Movie mistakes with radio

    I saw a Magnum P I episode where a mic "seemed" to be coming out of a radio shack scanner, and Magnum was transmitting for help off this setup. Then, Rob Lowe on 911 Lone Star was receiving, yes receiving, signals from his EF Johnson Ranger transmitter there in his living room. And I think there...
  6. Gman

    Uniden Madison MB8719 All Channels 10 khz down

    Paralled??? What was I thinking??? LOL!
  7. Gman

    Uniden Madison MB8719 All Channels 10 khz down

    Going thru my notes, i found an old trick my elmer showed me. And it works. I paralled two 11.325 mhz crystals, and the darn thing aligned right up as if i had just the 11.3258 crystal in there. Until the correct crystal comes in, i can sleep at night knowing the clarifier is a 1 pm and not 9 pm.
  8. Gman

    Uniden Madison MB8719 All Channels 10 khz down

    I ordered an 11.3258 mhz crystal. In the mean time I will try shorting the coil and see if it raises the frequency at all. Thank you for the info.
  9. Gman

    Uniden Madison MB8719 All Channels 10 khz down

    And there it is. Thank you very much SuperLid.
  10. Gman

    Uniden Madison MB8719 All Channels 10 khz down

    OK, removed 8v source from clarifier. No change. But now, I'm thinking, Nomad cant be off. Well, it does seem to be tuning. But I think I found the problem. I don't have another Madison to pull parts from, but I do have 148 cobras for parts. And I keep reading Madison and 148's are identical...
  11. Gman

    Uniden Madison MB8719 All Channels 10 khz down

    Thank you. Will try all and report back.
  12. Gman

    Uniden Madison MB8719 All Channels 10 khz down

    Nomad, thank you. Been awhile since we talked. I will relook the tuning but almost sure its not this. The radio was heavily butchered. There was even an old DX FM module in there. I recall having another base doing this 10 khz off thing, and the cause was a switching diode or varactor pulled...
  13. Gman

    Uniden Madison MB8719 All Channels 10 khz down

    I always get the really weird ones. Bought a basket case Uniden Madison off ebay. Mods everywhere. Undid all I could figure out. Was missing the 11.3258 crystal so I added that. All LEDs burnt out (AM, USB, LSB, CH9). Channel LED missing. Mic and RF gain pots missing. Speaker and PA jacks...