Question about Cobra 29 LTD CB Radio

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Why is a dead key on ssb when mic is keyed down?

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Cobra 29 LTD doesn't have SSB. You must have a Cobra 146 GTL or one of the Cobra 148 GTL's.

Posted on Jun 13, 2014

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3 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
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Posted on Jan 02, 2017

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JOHN BABA

  • 1274 Answers

SOURCE: cobra 2000 with a d 104 mic and a palomor tx100 bi

Hi, my name is John. Adjust the radio to key 1 watt, then switch to SSB on radio,then switch to SSB on amp, key down and adjust to 1 watt on amp. enjoy !!!!!! ...hope this was very helpful....

Posted on Aug 31, 2010

Ironfist109

Iron

  • 3018 Answers

SOURCE: it has a great dead

  • Hi, I can help.

  • If you have confirmed your dead key being "great" the the two things that can be causing your problem is a faulty mic, mic wiring, mic connector (either on the CB i=or the mic connector itself.
  • Have you tried a different mic?

  • The other thing would be a bad antenna, antenna connection, SWR.
  • Have you tried a different antenna? Checked your SWR (with an inline meter)? Make sure the antenna connector (PL259) and the connector for the antenna on your CB (SO239) are in good condition and that there are no cold soldier joints.

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

Regards, Tony

Posted on Sep 16, 2011

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1 Answer

Ssb has a dk carrier when mic is keyed?


You have a cold solder connection or dirty contacts in the relay.. key the radio and tap the radio... if the carrier goes away its a solder connection.

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No transmit or recieve


sounds like a repair for a tech to me.

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I've brought a superstar 360fm ssb rig off ebay and when i was trying to tune the arial in the mic stopped keying up and i couldn't hear any one as if the mic was disconnected, it was a really old mic that...


export radios rx without a mic. so its an issue in the radio.
will the PA function work?
and will the meter move.
will the green rx led change to red when you key?

Oct 10, 2013 | Radio Communications

1 Answer

My cobra 142 gtl loses power about two minutes after keying the mic.


hi

it looks like the output stage is going hot (99%)

maby the swr is high end eficiancy is low

usualy on ssb the power is higher than on am


bernard




http://www.rylwy.com/

Aug 03, 2012 | Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

SSB dead key & TX frequency problems


Check C-144, c-149, c-153, c-154 using an ESR meter.

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Cobra 2000 with a d 104 mic and a palomor tx100 bi linear amp...how can if possible make the amp key up with less than one watt on the ssb side..Radio has a 4 watt dead key on am and i have ajusted the...


Hi, my name is John. Adjust the radio to key 1 watt, then switch to SSB on radio,then switch to SSB on amp, key down and adjust to 1 watt on amp. enjoy !!!!!! ...hope this was very helpful....

Aug 31, 2010 | Cobra 148 GTL 120-Channels Base CB Radio

2 Answers

Just want to know if i should use my ll203 amp in am or ssb mode when running with a cobra CB radio?


What radio?? Does it have single side band(SSB)? If not, then don't use SSB.

AM - amplitude modulation
SSB - single side band.

If you have SSB, there would be a switch on it to transmit in SSB. If not, it is AM only.

Second, Has this radio been worked on to be able to run on an amp? If not, you will blow the amp.

A CB radio transmits dead keys with 4 watts of power, and transmits with 4 watts of audio.

a 4 watt dead key is too much for a linear amp. You will smoke the transistors. Also, 4 watts of audio is not enough to drive it properly. You won't get full power.

The dead key needs to be around 2 to 2 -1/2 watts,or what ever makes the linear dead key half its peak wattage., and the modulation (audio) turned up all the way.

It doesn't sound like you know too much about CB radio's. Not a big deal, you can learn. For right now you may want to take it to a cb shop and tell them you want a peak and tune, and set up to run a linear.

You can find CB shops usually at truck stops. Some area's they are other places. Check the internet for local shops.

Oct 31, 2009 | Galaxy Radios DX-959 40-Channels Base CB...

1 Answer

My 360 stays key up all the time on ssb can you help


Try pulling the mic out to see if it stops if it does you have a problem in the mic if not it
is inside the radio.
Good luck

Jun 04, 2009 | Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

Galaxy 2527 all works except no dead key wattage.


if you are talking on SSB then their is never a dead key wattage.
SSB uses all modulation, no dead key.

Apr 25, 2008 | Magnum OmegaForce S45 CB Radio

2 Answers

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.

Dec 11, 2007 | Cobra 148 GTL 120-Channels Base CB Radio

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