Question about Cobra 29 LTD CB Radio

2 Answers

Cb radio does not transmite

I have the Cobra29LTD i can recieve perfect and as far as i know everything is hooked up right and working but when i try to transmite out no one can hear me at all i even had one of my friends check with me and he could just barely hear me with full volume what wrong with my cb do i need a new mic

Posted by on

  • cbi423 Jan 26, 2009

    No i didnt open it up and its just the stock mic

  • cbi423 Feb 01, 2009

    i got the radio working all i needed was a new mic but now its making a whine noise when i move the mic to talk and my SWR needle jumps around and im getting very high readings



2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has written 7 tips or uploaded 3 video tips

  • Master
  • 773 Answers

When you check your SWR you need to be in an open area. like a field or empty parking lot.

Put the switch to CAL and then turn up the cal dial until the need is all the way to the right on the cal mark while holding the key.

now while holding the key flip the switch to SWR. this will give you an accurate reading.

You should not be talking while doing this, and to help not picking up background noise, turn the dynamic mic gain down all the way.

when the switch is all the way up on s/rf it will move around because it is reading how much signal you are putting out and recieving.

Your SWR should read under 2. 1.5 is acceptable. any thing lower then 1.5 is good. the closer you get to 1 the better. If the antenna light comes on stop transmitting or you will blow your final.

Here is how to adjust the antenna if your swr's are off. check reading on channel 20, this channel should always have the lowest SWR.

If its high, then trun to channel 1 and take a reading, write it down.
then turn to channel 40 and take a reading. write this down.

If the reading on 40 is hight then on 1, then your antenna is adjusted too long. if it is hight on 1 then on 40 then it is too short.

either lower or hight your antenna, usually it will slide in and out of the base a bit if it is a metal whip. If its fiberglass it may have an adjustment on the tip. If there is no adjustment, and it is too long then you need to clip the antenna to tune it. with a wire cutter, clip an 1/8th of an inch at a time.

check difference each time you adjust the antenna between 1 and 40 and make adjustmnets bassed on the reading. If you are clipping the antenna, make sure not to clip it too short, because you cannot make it longer once you clip it too short.

Posted on Feb 08, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers

You might be having a dead key problem. Do you run a power mic? if so check the battery in it if you dont run a power mic then your have RF gain problems. Take it to a local cb/truck stop and get them to look at it.

You didnt open it up and mess with it did you?

Posted on Jan 26, 2009


1 Suggested Answer

  • 2 Answers

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

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Transmits but does not receive. cobra29LTD Can it be a active copponent

where is the RF gain? It should be all the way up.

The other thing that can cause no receive. Its a common issue. If you have a mic with a broken wire in cord, if its the wire for receive, then when the key is released the radio will not go into receive mode. The switch in the mic determines weather the radio is in transmit mode or receive mode.

So make sure the RF gain is on max, and try another mic.

Sep 26, 2010 | Cobra 29 LTD CB Radio

1 Answer

I want to know how to tune my cobra 19 3 ultra cb so that i can recieve and transmit

you can't tune the radio. You must tune the antenna. I have a generic thread which explains everything you need to know about tuning your antenna.
See here. Hope this helps you.

Aug 22, 2010 | Cobra 19 Ultra II CB Radio

1 Answer

Can recieve but not transmit

The mic wires are soldered incorrectly. Get another cobra mic for that radio or have a qualified radio tech correct the wiring.

Apr 15, 2009 | Cobra 29 LTD CB Radio

1 Answer

Powers up, recieves fine, breaksup on transmit Galaxy 949

Check the wiring on the mic plug sounds like you have a loose wire or one thats about to break off.Good luck.....Dan

Apr 01, 2009 | Galaxy Radios DX-949 40-Channels Base CB...

1 Answer

No Transmitting, no RX sound, but can hear speaker click on...

Hi there!!

The symptom sounds like a bad Microphone connection or a bad microphone!! The Cobra has a built in circuit that wont allow you to hear anyone until the microphone is plugged in and the no transmit part will also do the same. Try another microphone that is wired right for that radio before you do anything else!! let me know!!


Mar 18, 2009 | Cobra 29 NW CB Radio

1 Answer

158edx,no recieve audio

Most of these kinds of radios will have two audio chips , on for transmit and one for recieve.sounds like you popped the recieve audio chip.

Feb 07, 2009 | Superstar SS-3900EGHPA CB Radio

1 Answer

How far can that midland 1001z radio transmit.And recieve.

Running most any regular cb, including this one barefoot (with no kicker), having a good antenna, set up with a good ground plane or a no-goundplane antenna, good coax; basically everything in good working order, you can usually bank on about 4 to 5 miles crisp and clear, and at least 6 to 10 miles fairly clear. Of course the further out you get it will start to fade out.

Some radios do better than others, but those are the general numbers I have seen in my years of experience.

Dean Pitts
Rollin CBs
Mt. Vernon, TX

Apr 27, 2008 | Midland 1001Z 40-Channels Base CB Radio

1 Answer

Doesn't Work

i know this may sound stupid. I can not tell you how many times a radio came into the shop with this problem.try this make shure that the cb/pa switch is on cb not PA.  

Oct 24, 2007 | Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

Lost channels in a galaxy 66v cb radio

as far as the transmit frequency changing while you have the mic keyed this is normal, the transmit frequency is a little different than the receive, as far as the lost channels go you need to check the galaxy website and check to see if thier is any fixes listed. if none is listed then you can send the tech's a e-mail and tell them your problem and they will advise you on what to do.

Aug 15, 2007 | Galaxy Radios DX-66V Base CB Radio

Not finding what you are looking for?
Cobra 29 LTD CB Radio Logo

246 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cobra Radio Communications Experts

Brad Brown

Level 3 Expert

17155 Answers


Level 3 Expert

3289 Answers


Level 3 Expert

79865 Answers

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

Answer questions

Manuals & User Guides