Question about Cobra 150 GTL DX Base CB Radio

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Cobra 150 gtl?

When on high power the modulation is very lou. outher then that the radio works very good

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RV12 is the modulation adjust for the 150. Check with for physical location.

Posted on Jul 30, 2008


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Cobra 150 gtl keys up modulates then drops off about a second later. no carier no modulation.unplug the radio or turn it off wait 30 seconds try again does same thing .does anybody know what it is and if...

First thing I would do is check the SWR on the antenna. These newer radios have a strapping diode that shuts them down when the reflected power heats the finals up to keep from blowing them. Once they cool off they will work again.

Oct 01, 2017 | Cobra 150 GTL DX Base CB Radio

1 Answer

Breaks up on high power but talks fine on low

sounds like the dead key might be set to high on the high side and you're not gettin any swing.

May 31, 2010 | Cobra 150 GTL DX Base CB Radio

1 Answer

Radio puts out a carrier wit no modulation

The output stages were very poor on these radios and if it still has warranty I would contact Cobra for an upgrade or replacement....

Mar 06, 2010 | Cobra 150 GTL DX Base CB Radio

1 Answer

I have no squelch.Radio comes on but can't hear anything.

check the SWR's on the antenna. make sure they are good. you may have it installed improperly.. or have high swr's.. if those are good. then the next step would have it checked out. there is not many servicable parts in the 150 and 200 models. either send into cobra. or have a reputable shop that can work on surface mount components look at it.

Dec 16, 2009 | Cobra 150 GTL DX Base CB Radio

1 Answer

Need a new Cobra 150 GTL DX power,vol,sqlch pot

you can write to parts department requesting price if you have a truck stop around you which has a cb shop they can sell u one

Jun 26, 2009 | Cobra 150 GTL DX Base CB Radio

1 Answer

Tunring up a cobra 150 gtl/dx

Um... What?? This is hooked to a switch? CB radio by FCC regulations is only supposed to have a max of 4 watts total output. If you can flip it to 7 watts dead key, you are doing really good. It won't do much more then that. It sounds like its set up to run on a linear amplifier, which cannot have more then 3 watts dead key transmitting into it.

Dead key, and modulation are different. You may have a meter that only reads dead key, and won't see the modulation. This radio is probably swinging close to 15-20 watts. you need a meter that can read PEP, Peak envelope power. Cheap meters only read AVG, or average power, witch will only show your dead key.

7 watts dead key is really good for that radio.especially since stock only has 4 watts. you cannot get any higher then that without changing finals.

at 3 watt dead key, or 7 watt dead key, your modulation wattage is still swinging much higher.

Also, you will get more swing with a lower dead key any way, which is better if you want it to be loud.

Leave it alone. its probably set just right.

May 12, 2009 | Cobra 150 GTL DX Base CB Radio

1 Answer

About a cobra 150 gtl dx

Look into the Workman Saturn B100 antenna. It's what I would use.

Apr 17, 2009 | Cobra 150 GTL DX Base CB Radio

1 Answer

Where is the modgilation limiters located on a cobra 150 gtl nightwatch

RV14,RV13,RV12anRV4 this will give you some tune up and modulation to.

Apr 11, 2009 | Cobra 150 GTL DX Base CB Radio

2 Answers

Cobra 150 GTL DX Base CB Radio

they have a surface mount audio driver transistor. if replace with a to-220 version normally the warbling will go away. same for the 200gtl

Nov 14, 2008 | Cobra 150 GTL DX Base CB Radio

1 Answer

Cobra gtl dx 150

audio is clipping due to improper setting amount of modulation. should be set at 95% retune it cb shop ny

May 04, 2008 | Cobra 150 GTL DX Base CB Radio

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