Question about Cobra 25 LTD 40-Channels Base CB Radio

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Cobra 25 LTD Classic

I have power to unit but no sound. all soders in side are good.

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Turn your squelch all the way counter clockwise and your rf gain clockwise. If that doesn't help, try hooking up an external speaker to make sure its not the internal speaker. If these help or don't help, please reply on this thread to let us know, so we can give you more advice if needed.

Rollin CBs

Posted on Jan 26, 2008

  • Dean Pitts
    Dean Pitts Jan 26, 2008

    Another thing, make sure your coax and antenna are good and tight, and make sure the mic connector is tight. If any of these are not making a good connection, it can stop your receive audio.

  • Dean Pitts
    Dean Pitts Jan 26, 2008

    One more, I don't have a 25 in front of me, and can't remember if it has a CB/PA Switch. If it does, make sure it is up for CB.


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Does it have an rf gain on it? if so turn it wide open

Posted on Dec 30, 2007


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The Cobra 25 requires the mic to be working for any sound to come out. My suggestion is that you first try a new mic. If this doesn't work, look real close at the board on the soldered side ( around the if section, thats the area that right under the waxed area on the component side of the board ) for cold solder joints ( broken lead solder) You may need a magnifing glass. Good Luck
NC Electronic
Mills, Wyoming

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