Question about Radio Communications

1 Answer

Mic wiring problems.

I installed a Maxon MCB40 in my jeep but lost the orignal mic for it. My friend gave me a Cobra CA73 mic and when its plugged in all I get is humming and clicking. I think the pins are different for both of them. I have the cover off the cb and the end off the mic but dont have a clue where to swap the wires to. Can someone help me out. Thanks

Posted by on

  • twfisk Apr 15, 2009

    I have a Cobra CA73 Mic. I need the replacement switch, but cannot

    get this from Cobra. Any suggestions? twfisk@ntelos.net

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 86 Answers

I have one for a Cobra CA50 may work
pin-1 shield or ground
pin-2 audio lead
pin-3 tx
pin-4 rx
there are one more
pin-1ground
pin-2 audio
pin-3-rx
pin-4 -tx

Posted on Sep 16, 2009

  • LB 163 Sep 06, 2010

    For the Audiovox/Maxon MCB-40 the mic wiring for a 4 pin Midland Radio is the correct style pinout to use

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I need to wire a silver salute mic to a cobra 142 gtl 5 pin what color wire goes towhat mic pin


dont go by colors.. go by what wires are on the switch and mic element.. mics can be rewired and no one told you the colors could have changed FYI..

Pin #1 ~ Audio
Pin #2 ~ Shield
Pin #3 ~ Receive
Pin #4 ~ Switch Wire
Pin #5 ~ Transmit

always go by connections not color of the wire. that way you learn and you can do any mic. to any radio.

Nov 30, 2013 | Radio Communications

1 Answer

I'm trying to wire a galaxy desk mic to a cobra 200 10 meter mobile


  • The Galaxy desk mic (power mic) is already wired four pin and the Cobra 200 is a 4 pin already as well. So unless someone has messed with them the mic will plug right up to the radio as is.

  • But if someone has repined the mic then follow the pinout I listed below to get it rewired for the Cobra 200
  1. Pin #1 on mic connector - Black wire.
  2. Pin #2 on mic connector - White wire.
  3. Pin #3 on the mic connector - Blue wire.
  4. Pin #4 on the mic connector - Red wire.

  • If you look on the end of the mic connector it will have the imprint of the number for each pin on the mic.

  • If you have any comments please feel free to leave them here.
  • Hope this helps and thank you for using FixYa.

Regards, Tony

Oct 02, 2011 | Cobra Radio Communications

1 Answer

Any one got mic wiring diagram


Hi,my name is John. Welcome to FixYa. I,am not to sure, but as I remember this is the same wiring as the Cobra stock mike. #1- shield, #2- white, #3- red, #4- black. Thanks for choosing FixYa...good luck....John

Oct 26, 2010 | Maxon MCB-30 40-Channels Base CB Radio

1 Answer

I have a cobra power mic that has no audio output


Sounds like its not wired up right, the audio wire must be off,take the plug apart and check the white wire, re-solder it. here is the wiring, pin1-shield,pin-2audio-(white), pin3-transmit-(red), pin4-receive-(black).....hope this was helpful...

Apr 23, 2010 | Cobra 29 LTD CB Radio

1 Answer

Hello there, I have the maxon mcb 30 and I have lost the mic. Do you know what kind of mic I must use to work good?


Try the stock mic from cobra, the regular 4 pin mic, its a great mic..... enjoy.... hope this helps....

Mar 13, 2010 | Maxon MCB-30 40-Channels Base CB Radio

1 Answer

My Cobra 29 LTD sometimes does not work even though the lights remain on. In other words I can't talk on it or hear anyone even though it appears to be operational


Your mic or mic jack is faulty. Try a different mic. In cobra 29's and some other variants, when you disconnect the mic, the audio is disabled. It will still receive, and transmit(possibly) but you will hear nothing from the radio.

It could be,
  • Broken wire on the back of the mic jack in the radio.
  • Broken wire in the mic cord.
  • Disconnected wires in the mic for the switch.
  • Dirty mic connection pins.
Most likely the problem is with the mic, and not the radio.

Oct 21, 2009 | Cobra 29 LTD CB Radio

4 Answers

Feedback problems with astatic echo boards


This is a classic indication of a lost shield or ground connection in the mic circuitry. Double check these connections for good contact in the mic *and* the plug at the other end of the cable.

Check the grounding and SWR or "match"of the antenna system, too. A poor SWR (greater than 1.5:1 or 2.0:1) can cause the reflection of RF back to the radio. Modifications can increase sensitivity of the mic to this unwanted RF.

Sep 29, 2009 | Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

Cant transmit


Hello Darren, Yes it sounds like the mic is wired bass ackwards,,! A cobra 25 mic wiring is
PIN #1- Shield or ground wire
PIN#2- Audio or Transmit modulation
PIN #3- Transmit or Dead Key
PIN #4- Receive Audio.
When your keying the mic, the RX wires are being connected to make the RX work,,,
*** Let me know how you get along with it. Either buy a new mic wired for your radio or you or someone comfortable with soldering needs to resolder the correct wires back on the mic plug,,,Like I said, let me know and have a great day,, Mechanic is back quiet!

Oct 21, 2008 | Cobra 25 LTD 40-Channels Base CB Radio

Not finding what you are looking for?
Radio Communications Logo

Related Topics:

239 people viewed this question

Ask a Question

Usually answered in minutes!

Top Radio Communications Experts

eradiostore
eradiostore

Level 3 Expert

1641 Answers

Brad Brown

Level 3 Expert

15100 Answers

kakima

Level 3 Expert

102366 Answers

Are you a Radio Communication Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...