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Sound coming through my speakers

I installed a cb radio in my jeep, i can talk and hear fine (with my car stereo off) when i turn the car stereo on, a horrid squeel comes through my speakers, when i key the mic. im stumped

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That is normal especially with stereo's without alot of filtering,but there are a few things you can do to try to alleviate some of it ; move your c.b. as far away as you can like maybe mount it on the transmission hump.Don't have the positives connected directly to the battery.Don't have your antenna close to the speakers,and while were talking antennas make sure your swr is low.If none of this helps think of it this way some people pay big $$ to have talkback in their radio you have it for free also though this is probably more important MAKE SURE all your wire connections are good ( no frayed wires ) . Good luck Dan

Posted on Jun 27, 2009

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its a fact of life when it comes to CB. Some times you will hear it over the radio if it is on. Happens with mine. There really is no way to solve it unless you replace all the speaker wire in the car with shielded wire.

You are sending out RF. When the AM modulation hits the speaker wires, the act like an antenna a bit. If there is any electrical signal in the wires, from the radio being on, even if the volume is low, and some times even down all the way, the signal in the wire coming from the radio acts like a carrier signal and causes the speaker to resonate to the modulation, giving you your voice on the speakers.

You can try running the power wire right to the battery, but its most likely coming from the antenna.

You probably will not ever be able to get rid of it.

Some cars it doesn't effect depending on the speaker wires, some it does.

I can say that a lot of people have their radio modded so that they can hear them selves over the radio when they talk. its called talk back. This way you can know how your audio sounds.

Think of it this way. You don't have to pay a tech to add this feature.


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the problem could still be with your swr . If your jeep is fiberglass at the point where your antenna connects that could be the problem. move it to a point where there is metal to get a good ground plane and you should hear people talking.

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If they can hear you but tou cant hear them, try opening the radio up and checking the speaker connections.

Ill need to know the result of those questions and tests before i can help further...

M3ODQ

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Can you hear static when the squelch is at minimum ?. If you can hear static then tere is nothing wrong with the audio system. If you are sure about the squelch, connect goosd speaker directly to the 2 wires coming from the main board bypassing the speker jack. if there is still no sound then the audio amp chip is defective. The audio amp can only be damaged if the output is shorted for a long period of time.

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