Question about Cobra 148 GTL 120-Channels Base CB Radio

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Rx enhacement i am having trouble increasing the recieve strength of an incoming signal. the recieve on my radio has been turned down below factory standards and i was wondering if you could help me to turn it back up

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Ouch, that's a tough one. Well, you can actually turn the receive back up, but you might want to have an expert do that, it's been known to be a tedious process.

Posted on Jul 01, 2008

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2 Answers

I have a Cobra 29 Ltd Chrome CB Radio that I would like to know how to turn the power up, and the modulation, peak and tune


vr4 turn it to the left all the way and ask for a radio check.If no one can hear you then turn it all the way to the right and have someone give you a check. You may want to check the SWR to the antenna while your at it. Thats all you can legally do.

Jul 03, 2014 | Cobra CB Radios

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If you're still getting loud squelch noise but do not receive on any channel, you must check the RF from the antenna to the audio stage(not included). There must be more than just one RF stage in this radio. Let me know what you find.

May 08, 2013 | CB Radios

1 Answer

When do you know if you have a decent radio


The 29 has a built in SWR meter--check the match to make sure it is below 2 (lower the better).

The radio can be peaked for better than factory audio.

If the squelch is up too high you will not hear people below a certain signal level---in your case set it so you hear who you want to and not jokers.

RF gain lowers signal the radio sees for receive.

The stock mic will work but make your voice somewhat flat sounding---a power mic or having the mod limiter removed will make the radio and your voice louder.

Let me know if questions.

Jun 10, 2012 | Cobra 29 LTD CB Radio

1 Answer

I have to keep my rf=gain turned all the way down or I get terrible feedback. How do fix it?


The RF limits the signal strength you radio receives. After setting the RF to limit excessive signals, then set your squelch up until the noise is gone. There are some areas which have high RF background noise so adjustments are made often while driving around. Use the ANL (automatic noise limiter) and other features also to control the noise.

Feb 19, 2011 | Ranger RCI-6900F-150 CB Radio

1 Answer

I lose signal, I get no white noise or anything.


Sounds like you might have a bad soilder on the board. If you take off the top cover and press on the board lightly here and there will the noise change or the radio work.If so then you'll have to locate the bad joint or have someone do it for you.

May 01, 2010 | Cobra 19 DX 40-Channels Base CB Radio

1 Answer

The ant light and the other light light up red when i key the kic


the tx/rx liight is green when your radio is recieving signals and turns red when you are sending signals. the ANT light is red when your SWR is too high (over 3)

1. turn the knob labeled swr cal all the way counter clockwise
2. set the rf swr cal switch to the CAL position
3 key up the mic and hold it while you rotate the swr cal knob until the needle reaches the swr cal postition
4. set the swr cal rf switch to the swr position
5. key up the mic while on chanel one (record the the number)
6. switch to chanel 40 key up the mic (record the number)
if the number on chanel one is lower than the number on chanel 40 then your antenna is too long.

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4 Answers

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You just have to lower your RF power so that the radio is putting out about a 2 watt dead key. Any higher and you will over drive the finals and burn out the final

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2 Answers

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Is there a dial marked RX Gain? Does this radio have this feature?

M3ODQ

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1 Answer

I have a cobra 25 ltd can i turn up the power without bringing it to someone


so what your asking then if you can increase the signal strength so I goes farther? If so then you can go to any radio shack and buy a signal booster that hooks up through the anntena line.

Dec 19, 2008 | Cobra 25 LTD 40-Channels Base CB Radio

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