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Midland 77-861

Van Lifeson

Well-Known Member
Aug 11, 2018
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Can anyone tell me the microphone wiring for this radio. The current microphone is also the speaker but the radio has an external speaker jack. I want to wire up a different mic to this radio. Thanks for any info!
 

Can anyone tell me the microphone wiring for this radio. The current microphone is also the speaker but the radio has an external speaker jack. I want to wire up a different mic to this radio. Thanks for any info!
I am gonna take a wild stab at this and assume that the 5th wire that is not used, is where they used for the positive of the speaker in the microphone. Wire up a mic and see what it does. I have the same radio but not sure where I put it for the time being. This is from the mic end connector solder side connections.

5pin midland.png
 
Neat old fully portable CB radio that isn't a walkie talkie! I have the 23 channel model of it. Had to replace the battery tray. They are often roached! You can find the trays on Ebay for a few bucks.
I couldn't find the right kind of rivets so used small flat head phillips screws to mount it to the leather case. The screw heads are on the inside of the case and if done right won't scratch up the top of the radio. Smaller nuts on the top don't get in the way of the batteries.
 

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  • @ heartbreaker3473:
    Hello gentlemen and Ladies. I have the dreaded RCI-2990 receive issue where my radio gets distorted when people get close to my location. I found the C90 Capacitor, but I can not for the life of me find the C89 capacitor. Can or does anyone have a picture of the exact location of C89 ? Thank you in advance, Wes
  • @ AudioShockwav:
    Wes, it's better if you start a thread on the main forum, more people are going to see your question.
  • @ heartbreaker3473:
    Okay, sorry, will put in a forum
  • @ heartbreaker3473:
    I put it in the general disscution help area and started a new thread. Thank you for letting me know.