Question about Cobra 29 LTD CB Radio

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Red antenna warning indicator light stays on

Static is bad on cb and the red antenna light is on i have a COBRA 29LTD CHROME and a wilson trucker 2000 antenna when i put my hand on the antenna the light goes off and the cb works fine?

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The red light is a warning of antenna mismatch; when you hold the antenna, you are changing the match between the CB's output amplifier and the antenna. Try it with a different antenna or pick up a 'test light' (or test load) for CBs from an electronics dealer, I've also seen them with CB accessories at truck stops. If the test light fires off and the red light on the CB is dark, the antenna you have is junk.

Posted on Aug 01, 2010

  • techy48 Aug 09, 2010

    The red light is to warn you that your swr is high. When you hold the antenna you are providing a better ground than you have on your antenna now. Go to a reputable CB shop and have them check and set your swr, if you don't do this you will cause serious damage to your radio.

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1 Answer

How to set duel wilson 2000 swr


with wilson antennas you don't have to need to run duals the proper way to adjust the SWR is to get an external meter like a trucker 2000 and a dummy load. you hook the dummy load to one antenna while working with the other and then switch the operation around. this way both antennas are matched seperatly yet work together.

Oct 27, 2013 | Cobra 29 LTD CB Radio

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I have had a Cobre 29 LTD Classic, a 29 NW LTD Classic and now a 29 LTD Chrome.It seems that the first two died because of possible bad antenna connections. I was able to calibrate the radios and adjust...


I see two possible problems. First, with a magnetic antenna it is difficult to get the proper ground for the antenna. Make sure the magnetic base is clean as well as where you place it. Second, try running your power lead DIRECTLY to the battery and not using the cigarette lighter. Hope it helps.
Tom

Feb 27, 2013 | Cobra 29 LTD CB Radio

1 Answer

I have had a Cobre 29 LTD Classic, a 29 NW LTD Classic and now a 29 LTD Chrome.It seems that the first two died because of possible bad antenna connections. I was able to calibrate the radios and adjust...


HELLO STAN FIRST HAS THE RADIO BEEN PEAKED AND TUNED? SECOND IS THE INTERIOR LIGHT IN YOUR PICK UP RIGHT BELOW YOUR ANTENNA,IF SO YOU HAVE A PROBLEM BUT EASY FIX THE WIRING GOING TO THE LIGHT ACTS LIKE AN EXTRA ANTENNA CAUSING YOUR ANTENNA TO RESONATE TO YOUR RADIO CAUSING THE A W I LIGHT TO COME ON MOVE YOU ANTENNA BACK A LITTLE FUTHER AND SHOULD BE GOODif you want to get a bettter antenna get a willson 500 mag mount far better

Feb 27, 2013 | Cobra 29 LTD CB Radio

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I have a cobra 29 ltd the red antenna light was coming on replaced the coax with 18' coax have Wilson 2000 antenna calibrated radio red light still coming on and and swrs not staying consistent when...


Best way to locate the problem is connect the radio to a Dummy load known to be good====if swr still comes on it is in the radio--if not in the antenna system.

Apr 28, 2012 | Cobra Radio Communications

1 Answer

I have acobra classic 29ltd key mike ant lights up replaced stud


First thing, you need to check your SWR, you must have a SWR meter to do this. If you are a trucker, you can get it checked at any CB shack, radio shack, etc, they will check it for free. Next, make sure the antenna driven element is clear of any metal blockage, and that it is getting a good ground at the base, don't know what kind of antenna you using, but the Wilson 1000 is a good one to use, install in midle of cab.........hope this was helpful.....

May 28, 2010 | Cobra 29 LTD CB Radio

1 Answer

Red RX/TX and red ANT light on my CB


Well,first hand ,some cobra radio,s have red some have green RX/TX lights, but are you modulating? Some green lights turn red. What is your standing Wave on the antenna,s? You need to check it and the output of the radio. To do this you need a watt or field strenth meter. Can get one at Radio Shack. Your standing Wave is ok as long as it is below a 2. That has to be done on the antenna. ..hope this helps...

Mar 11, 2010 | Cobra 29 LTD CB Radio

1 Answer

Calibration problem


Changing the length of the mast more then likely made your antenna to short, and therefore impossible to tune.

Jul 01, 2009 | Cobra 29 LTD CB Radio

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I have a Cobra 29 LTD with Bluetooth. I have no static no matter where I set my squelch and RF gain unless my noise blocker is off. Both my rx/tx and antenna lights turn red when mic is keyed. I have try...


if the antenna warning indicator is lighting during transmission then the antenna is either located and.or installed improperly or a defect exists in the antenna mount or the feedline itself, including connectors.

Jun 08, 2009 | Cobra 29 LTD CB Radio

1 Answer

New Cobra 29 ltd


Hi,

Appreciate the direct "Ask Me". If I may clear up your concern:
  • you have two CB radios, one is a Cobra 29LTD and the other?
  • both have received and both do not transmit;
  • you have two trucks, one with a Firecracker 1000 antenna, and the other?
In any case and initially, TX (transmit problems) could be caused by:
  • defective PTT/mic;
  • defective finals/drivers;
  • defective PL-259 connector/RG58 Cable;
  • antenna grounding/SWR;
  • other electronics internally
Please check the above. You may need an SWR meter, a watt meter and a DVM/VOM to perform the tests.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa.

Nov 05, 2008 | Cobra 29 LTD CB Radio

2 Answers

Cobra NW LTD CB radio


start out by getting a good antenna like a wilson or k-40 if your using it on a big rig make sure its a metal mirror and door a lot of big rigs use fiberglass and thats a nono you must get a no ground plane antenna...its all in the antenna...good luck doc's cb shop ny

Apr 09, 2008 | Cobra 29 NW CB Radio

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