Cobra 25 LTD 40-Channels Base CB Radio Logo

Question about Cobra 25 LTD 40-Channels Base CB Radio

1 Answer

Cant transmit i bought a cobra 25 had to buy a mic when i key the mic is when i recieve but cannot transmit could it be the microphone please help new to hobby

Posted by darren_elgin on

Add Your Answer
  • darren_elgin Oct 31, 2008

    thanks that was the problem working great now

×

1 Answer

Mechanic688

Mechanic688

  • Level 2:

    An expert who has achieved level 2 by getting 100 points
    All-Star:

    An expert that got 10 achievements.
    MVP:

    An expert that got 5 achievements.
    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 204 Answers

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!

Posted on Oct 31, 2008

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1helpful
1answer

I bought 3o brand new standard cobra mics from an individual. The wire is not the standard color code. these mics do not work on cobra 4 pin radios. Whats up?
THE YELLOW I BELIEVE IS THE AUDIO LEAD WITCH GOES TO PIN 2 AND SHIELD IS PIN 1 PIN 3 IS TRANSMIT AND 4 IS RECEIVE
Read full answer
Feb 26, 2013 • Cobra HG-M73 Standard 4-pin Microphone
1helpful
1answer

I have a Cobra 29 LTD that dosn't have any volume. I can see that it is transmitting and recieving by the meter, but it has no squelch or volume through either the speaker or an external speaker.
Try a different microphone. If the mic is bad or a wire is broken it will cause this problem.
Read full answer
Jan 01, 2013 • Cobra Radio Communications
0helpful
2answers

My cobra 29 recieves but won't transmit..needle don't move when I key the mic..tried new mic..no change...new antenna...still no change..could a soldered connection have broken on the circuit board..?
try your mic
Read full answer
Dec 31, 2011 • Cobra 29 LTD CB Radio
0helpful
1answer

I can recieve but i cant transmit have new antenna and new mic
Check that your mic gain or dynamike knob is turn clockwise if it is full counter clockwise you will have no modulation with your tx power.
I would like to help but one sentence describing your problem can lead to a vague solution.
Be aware that not all 4 pin mikes are wired the same.
Stock
1- Shield
2- Audio
3- Transmit
4- Receive
Read full answer
Aug 28, 2011 • Cobra 29 LTD CB Radio
0helpful
1answer

I have no audio going out but audio coming in> im not sure if i need a new microphone.
It could be a Final transmit transistor or it could be the Microphone itself also, change Mics and crank up MiC gain. If that does not do it. Its your Final.
Read full answer
May 12, 2011 • Cobra 25 LTD 40-Channels Base CB Radio
1helpful
1answer

Radio stays transmiting after mic released
What happens if you "key up" and "let off" and the transmitter "hangs", you remove the microphone plug from the Cobra ?
Will it still be transmitting or will it stop ?
If it stops, the problem is in the microphone with a "hanging" switch which you can easily clean or replace.
Iif it keeps transmitting while the mike is disconnected, there is a problem with the Rx/Tx switching circuit. This needs further investigation by use of a circuit diagram.
Read full answer
Feb 13, 2009 • Cobra 29 LTD CB Radio
1helpful
1answer

Mic wiring for a cobra 85 base cb
Pin 1 is shield, thats the bare wire wrapped around the mic audio wire
pin 2 ic mic audio [usually white)
pin 3 is transmit or push to talk usually red
pin 4 is recieve or speaker complete usually black
Read full answer
Jan 08, 2009 • Cobra 25 LTD 40-Channels Base CB Radio
0helpful
2answers

My CB radio is bust
Check The Microphone Connections In the Plug On Mic wire could be off Or try another Mic. go to www.cbtricks.com look under cobra 89gtl or cobra 1000gtl both have the same board in them.
Read full answer
Feb 12, 2008 • Radio Communications
0helpful
2answers

Cobra 148 gtl
First off check to see if your mic gain is turned all the way down. Second; if you have a power mic is the battery dead ir the volume of the mic turned down. If these check ok, look for a loose or broken audio wire in your microphone, and the connector (both ends can break). I have seen the wires break as far back as 4 inches from the mic head and the connector depending on how the user held the microphone, or pulled against the wire. if the problem is not found to be any of the above I suggest you take the radio to a qualified technician for repair.
Read full answer
Dec 11, 2007 • Cobra 148 GTL 120-Channels Base CB Radio
0helpful
2answers

Cb transmitting problem

Hello kaelea,

 

Check your ground wire and by your post I gather that you are user some form of headphone device, I say this because normally the speaker is off when the microphone is keyed. I would also check the controls on the headset if you are using one.

 

I hope this helps,

 

Thank you,

Shuttle83

Read full answer
Oct 16, 2007 • Cobra 19 DX IV CB Radio
Not finding what you are looking for?

View Most Popular

25 LTD 40-Channels Base CB Radio

  • Radio Communications

Related Question

I bought 3o brand new standard cobra mics from an individual. The wire is not the standard color code. these mics do not work on cobra 4 pin radios. Whats up?

  • Cobra HG-M73 Standard 4-pin Microphone

Open Questions:

0answers

Have an intermittent problem transmitting on my cobra 25 nw ltd, comes and goes, have used several mics and problem still persists, I think it is internal, where do I begin to look internally? Is there a common component that goes bad and needs to be replaced, or maybe a touch up solder job?
Read full answer
Be the first to answer Sep 17, 2010 • Cobra 25 LTD 40-Channels Base CB Radio
0answers

I HAVE A COBRA CA-73 4 PIN MIC ID LIKE TO WIRE I have A cobra CA-73 4 pin mic id like to wire it to A 5 pin teaberry stalker xv radio any one know where the 4 wires go on the 5 pin connecter thanks
Read full answer
Be the first to answer May 10, 2010 • Cobra 25 LTD 40-Channels Base CB Radio
0answers

my radio on home theater system became staticky all of a suddon.why?
Read full answer
Be the first to answer Apr 07, 2009 • Cobra 25 LTD 40-Channels Base CB Radio

Related Topics

463 views

Ask a Question

Usually answered in minutes!

Popular Questions

When Mic is keyed TX illuminates but no green nand

Cobra 19 DX IV CB Radio

How do i peak and tune a cobra 29 lx

Cobra 29 Lx Full-featured Cb Radio

Stuck on rx mode

Cobra LI3900-2DXVP (14 Channels)...

How do i calibrate my cobra 29 ltd classic

Cobra 29 LTD CB Radio

Constant RX mode on Cobra Microtalk Walke Talke

Cobra PR4100-2WXVP 2-Way Radio

Top Cobra Radio Communications Experts

Brad Brown

Level 3 Expert

19166 Answers

Steve

Level 3 Expert

3290 Answers

Marvin
Marvin

Level 3 Expert

85241 Answers

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

Answer questions

Manuals & User Guides

PDF Manual
. 25 LTD 40-Channels Base CB Radio...

25 LTD 40-Channels...

Loading...