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President Madison / Galaxy FC-347 Hook Up?

Discussion in 'CB Radio Modifications' started by Shadetree Mechanic, May 28, 2018.

  1. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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    Hey guys,
    Just picked up a President Madison for $50 from a local guy. It works great and even has upper channels. I already own the Galaxy FC-347 counter that I use on my Stryker 440. The Stryker doesn't need it so my question is:
    Can anyone show me where to connect the wires of this counter on the Madison? This is what CB Tricks shows for the Cobra 148. They don't seem to have any info at all on the Madison.
    Any help would be appreciated.
    Chris

    [​IMG]


     

  2. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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    This is the Madison.

    IMG_20180528_164914132.jpg
     
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  3. Dmans

    Dmans Well-Known Member

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    $50.00 well invested!
     
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  4. ExitThirteen

    ExitThirteen Grumpy and Cranky

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    That radio is a bit tricky to hook up a counter to. The radio has an offset crystal for each mode so if you were to hook up a counter like the FC-347 or and FC-390, it will not display the frequency correctly between all 3 modes. You can set the counter to read right on AM, but on LSB it will display low, and on USB it will display high. The radio can have a counter hooked up to it, but just won't read correctly in all modes is all.

    ~Cheers~
     
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  5. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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    I have been reading this thread:
    https://www.worldwidedx.com/threads...to-cobra-148-gtl-with-front-panel-mic.170136/

    I could probably find the all of the connections with a meter except the VCO. Does anyone know where a schematic would be for this radio? CB Tricks has nothing.

    If the side band frequency would not read correctly with this meter, is there a different meter that would work with this radio?
     
  6. Dmans

    Dmans Well-Known Member

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    STM,
    I have no experience with this counter, but if what you are looking for is the connection point for Wire #2-White (from your diagram above) to VCO O/P (and O/P means Output?), that would be pin 17 of the PLL chip.
    Lots of "ifs" in the above statement.

    I believe Exit 13's statement of this counter not reading correctly in all modes as well. Seems this unit has 5 crystals in it.......... way over my head.

    73's
    David
     
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  7. ExitThirteen

    ExitThirteen Grumpy and Cranky

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    A Paradynamics PDC-256 counter will display on this radio, but again, it won't read the sideband frequencies correctly. There really isn't a counter that you can buy that will display frequencies in all modes correctly. Between the 3 mode crystals and the 2 SSB offset crystals, that makes it about impossible for those kinds of counters to display the frequency correctly.


    ~Cheers~
     
    Shadetree Mechanic and 9C1Driver like this.

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