Question about Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

Cobra 29GTL Won't Transmit

I've got an old Cobra 29GTL set up at home as a base unit that receives fine but does not seem to transmit. The red "ANT" light comes on when I key the mike even though it's hooked up to a good antenna. I also calibrated the mike to the meter. Any suggestions?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 19 Answers
Re: Cobra 29GTL Won't Transmit

If the red ant light comes on this means that you have antenna trouble either in the antenna itself or the coax but this should not have anything to do with the radio not transmitting. it sounds to me that you have a bad audio chip or a bad power output transistor. in either case you should really take it to a cb shop and let the professionals solve your problem, good luck!!

Posted on Aug 17, 2007

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

On my Cobra 25 LTD CLassic, New my meter drops when transmitting

is this a new out of the box radio?if so you might need a tech to look at it because it could be an internal problem.It would have to be put on an analyzer and a scope to actually be seen doing what you say.don't worry because it can be fixed.the cost of fixing it is the problem.You have to decide whether you want to pay more for the repair than you paid for the radio. Either way,new or used the answer is the same.

Sep 30, 2012 | Cobra 25 LTD 40-Channel CB Radio

1 Answer

Cobra 148 gtl-st wont transmit but receives great

Check first your microphone

• check if TX is engaging when PTT is pushed.

• check for continuity ( mic and cable )

If you have not done these steps,

try it first, or borrow other compatible mic for Cobra 148GTL

from your friends on air.

Jul 28, 2012 | Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

I am able to transmit but not receive

get another that only receives and no transmit.hook them up together .one on top of the other .I have a friend that did this and it actually worked

May 30, 2012 | Cobra 18 WX ST 40-Channels Base CB Radio

1 Answer

How to wire a HG M73 mike to a galaxy DX 959

1- Shield (Ground)
2- Yellow (Audio)
3- Red (Transmit)
4- White (Receive)

1- Audio
2- Transmit
3- N/C
4- Shield
5- Receive

Dec 04, 2011 | Galaxy Radios DX-959 40-Channels Base CB...

1 Answer

Cx80, what does the code "rx" mean on the display

  • TX = Transmit. RX = Receive. Does your needle move when you key the mic? Does it modulate when you talk in the mic? Do you have an inline watt/SWR meter inline? What kind of a set up do you have? Mobile? Base? Get back to me if you want further help.
Regards, Tony

Oct 18, 2011 | Cobra 29 LTD CB Radio

1 Answer

On a cobra mike what color wires are transmit,receive, auto ,common

Hi, my name is John. Welcome to FixYa. # 1 is the shield, # 2 is audio- white, #3 is the transmit- red, #4 is the receive- black. Good luck and thanks for choosing FixYa...John

Nov 02, 2010 | Cobra 29 LTD CB Radio

1 Answer

I have a new cobra 148 with ssb, about 6 months old, while i was away there was a storm, now the radio doesnt work , recieve or transmit, i also have a cobra 29 ltd that wont transmit but it will recieve....

make sure the mic is good. If for some reason the mic went bad, it will not receive or transmit.

As for the one with no receive, it most likely needs a new final.

If lightning hit your antron, it would be in pieces.

Aug 02, 2010 | Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

Cobra 150 Lights up,and receives but does not

I know this is going to sound stupid but if you hit or should I say tap ot it will it transmit. If so then you have a bad soilder some where on the board if not its probably your voltage regulator gone bad.

May 22, 2010 | Cobra 150 GTL DX Base CB Radio

1 Answer

Cobra 29 LTD Classic not transmitting or receiving

ant. light should only come on if you have a high vswr a bad thing did you check that cb/pa switch is set to cb check your swr this is not a good place to mount ant. as it is close to metal of back of cab

Dec 20, 2008 | Cobra 29 LTD CB Radio

1 Answer

I have a cobra 29 and all it will do is light up. It will not receive nor will it transmit. What might be the problem?

the easiest thing to check first is the mic..........if the mic is broken cobras wont receive or transmit
hope this helps.......good luck!

Dec 05, 2008 | Cobra 25 LTD 40-Channels Base CB Radio

Not finding what you are looking for?
Cobra 148 GTL 120-Channels Base CB Radio Logo

365 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cobra CB Radios Experts

Level 2 Expert

489 Answers


Level 3 Expert

3018 Answers


Level 2 Expert

204 Answers

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

Answer questions

Manuals & User Guides