Question about Cobra 148 GTL 120-Channels Base CB Radio

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Doesn't Work My radio can't recieve or send anything. The meter doesn't move when transmitting!! It has power!!!

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  • ChadL Nov 01, 2007

    That was the first thing I tried!!! Thanks Though... Anymore ideas!?!?!?!



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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.  

Posted on Oct 31, 2007

  • wood butcher Nov 01, 2007

    the next thing i would try is to see if the radio will tx on side band.if you have already done this,i would probabley say that the IF crystal is bad or it could hive a bad solder joint.hope this helps



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1 Answer

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Check your microphone and the SWR on the antenna.
SWR checks or bench checks should be free at a RadioShop or CBshops, and normally they will only charge for parts needed.

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Got a connex 3300HP has a ranger board and chipset won't modulate recieves fine keys up relay clicks needle doesn't move no voice either cant find schematics

You may have a dead meter.
Modulation is audio's affect on swing wattage or pep. Notice that needle moving more with your voice.
Dead key or carrier wattage is without your voice enhancing the power only with mic keyed.
I can only assume that the chipset you are referring to is an ic chip audio or pll which must be working if you are receiving audio.
Check your mic cord................ transmit and modulation and even your receive volume can be affected by the cord/mic plug solder joints or broken wires here. this is a similar radio the General Lee, Connex 3300hp and Galaxy hp2 share boards i believe dont hold me to that thou.

Aug 20, 2011 | Connex 3300 240-Channels Base CB Radio

1 Answer

I can only hear the others. When I talk they can't hear and my red anntenna keeps coming on when I push button to talk.

Assuming the antenna is mounted and grounded correctly,when you try to transmit/talk does your meter needle move to the right with your voice,if it doesn't make sure meter knob is set to receive/transmit or mod[modulate] does it move to right now,if not make sure the mic gain knob is turned up or if it is a power mic,is it turned up&have a fresh battery.The antenna light could mean high swr readings which you will have to adjust by tuning the antenna with the radio meter or external meter,you can search swr adjustment on your computer if unfamiliar..some antenna warning lights are factory set too sensitive but most times are telling you there is a problem.If all is set&tuned properly and you still can't get a local signal to respond, your radios transmit finals could be blown,which you'll need a qualified radio tech to determine..Good luck& 73's

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1 Answer

Meter not moving

sounds like the meter is either dirty or bad. If you can open the, spray a small amount af cleaner in the top of the meter, normally you'll have to get a small screw driver to punch a hole in the plastic. and sometimes just move the screw a little to work it in.

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1 Answer

CB radio recieves but does not transmit.

I would recommend that you put an swr meter (CLICK HERE) between the radio and the antenna to see if your radio is transmitting anything at all. Also, it will check to see if your radio is correctly matched to your antenna. If your antenna is not matched correctly it will fail to transmit correctly.

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1 Answer

My cb transmits with a very weak signal and won't recieve anything. The weather band recieves with no problems. I couldn't even pick up a signal on my SWR meter but a friend of mine tested it on his home...

There are a few things that could be wrong. If there is something wrong with the mic, you may not hear anything on the radio. but weather will work.

Other then that, the receive section of the radio could be blown.

Try a new mic, and if it doesn't work, then there is something blown in the radio. It needs a tech.

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