My latest microphone

Discussion in 'CB Radio Forum' started by rabbiporkchop, Sep 17, 2016.

  1. Sep 17, 2016 #1
    rabbiporkchop

    rabbiporkchop Road Train Member

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    It took me all night to put this thing together and stuff that little Transformer inside this thing without breaking any wires.
    [​IMG]

    There's lots of these things on eBay for dirt cheap and these are noise cancelling but they will not work on a Cobra 29 only export radios.
     
    rabbiporkchop, Sep 17, 2016
    rabbiporkchop, Sep 17, 2016
    #1
    bored silly Thanks this.
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  3. Sep 17, 2016 #2
    Ridgeline

    Ridgeline Road Train Member

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    Ok good catch.

    I haven't seen them for a while but I think they dumped a crap load on the market so I see them on eBay now.

    What do you mean they won't work in a 29?

    The one I have is dynamic 100 ohm mic, no phantom power needed.
     
    Ridgeline, Sep 17, 2016
    Ridgeline, Sep 17, 2016
    #2
  4. Sep 17, 2016 #3
    rabbiporkchop

    rabbiporkchop Road Train Member

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    The one I got has no provision for a receive wire in the switch .
    Other versions might, but not sure.
     
    rabbiporkchop, Sep 17, 2016
    rabbiporkchop, Sep 17, 2016
    #3
  5. Sep 17, 2016 #4
    Ridgeline

    Ridgeline Road Train Member

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    Ok I got it, I actually looked at what I have, I've got three of them and several hand sets. I used them on relay switched radios so I didn't think about the fourth wire, but that can be fixed with a little mod.
     
    Ridgeline, Sep 17, 2016
    Ridgeline, Sep 17, 2016
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    bored silly and rabbiporkchop Thank this.
  7. Sep 20, 2016 #5
    bored silly

    bored silly Road Train Member

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    when was that thing made in the 1950s your one hard core radio dude that's for sure.....
     
    bored silly, Sep 20, 2016
    bored silly, Sep 20, 2016
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    rabbiporkchop Thanks this.
  8. Sep 20, 2016 #6
    rabbiporkchop

    rabbiporkchop Road Train Member

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    Those microphones have been around forever and the army still uses them.
     
    rabbiporkchop, Sep 20, 2016
    rabbiporkchop, Sep 20, 2016
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    bored silly Thanks this.
  9. Sep 26, 2016 #7
    mike5511

    mike5511 Road Train Member

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    Well how about sharing the mod please?
     
    mike5511, Sep 26, 2016
    mike5511, Sep 26, 2016
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    rabbiporkchop Thanks this.
  10. Sep 26, 2016 #8
    Ridgeline

    Ridgeline Road Train Member

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    It's a relay that is put into the radio, rewiring the switching circuit to use the relay instead of the ground and just ground the relay through the mic plug to activate it, it is an old old trick that works.
     
    Ridgeline, Sep 26, 2016
    Ridgeline, Sep 26, 2016
    #8
  11. Sep 26, 2016 #9
    rabbiporkchop

    rabbiporkchop Road Train Member

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    I guess that explains what that mysterious relay was doing in my old President Grant back in the eighties.
     
    rabbiporkchop, Sep 26, 2016
    rabbiporkchop, Sep 26, 2016
    #9
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