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Cobra 89XLR mic wiring is driving me ape

Discussion in 'General CB Services Discussion' started by TruckerKevin, Jul 12, 2019.

  1. Tallman

    Tallman W9WDX Amateur Radio Member, KW4YJ EXTRA class

    May 1, 2013
    Likes Received:
    Key? I don't need no stinking key!


  2. sunbulls

    sunbulls Sr. Member

    Apr 25, 2017
    Likes Received:
    First, you should not be able receive unless you have the mic plugged in. It’s the mics job that makes the receive connection, not any internal connection on the back of that jack. Therefore, keep the mic plugged in for further tests. Second, it looks like you might have 2 pins on the back of that jack that are soldered together. If that’s the case make sure they’re separated. Lastly, determine where the notch location is on the back of that jack. You will need to unplug the mic and look at the front of the jack to find the notch location. The following diagram shows each of the pins functions and numbers in relation to the notch as you’re looking from inside the radio.
    Hope this helps a little..
    cobra back.jpg
    Shadetree Mechanic, NZ8N and Robb like this.
  3. TheRealPorkchop

    TheRealPorkchop Certified Sith Pimp

    Aug 25, 2015
    Likes Received:
    I don’t think he can receive because all the wires are trashed. No ground on receive.

    I find it annoying that in a Cobra you gave to plug a mic in to receive. But, if you ground that pin/wire so you can receive without a mic plugged in, you get talkback when you transmit. Annoying also.
    Shadetree Mechanic likes this.

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