Question about Midland 1001Z 40-Channels Base CB Radio

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Audio playback through speakers

My Midland CB radio has a small amount of audio playback through my car stereo when i transmit. What could be the issue here?

Posted by jjniles23 on


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Tony A

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This happens because of the close proximity of the CB transmitting antenna to the car stereo antenna. I don't know for sure what country you live in, but if your country's CB system uses AM as a transmission mode it is well known for breakthrough on audio systems etc. In the UK, we have FM on CB frequencies which is less-prone to giving interference.
You could try ferrite rings/clamps on the car stereo antenna coax cable, power cable and also on your loudspeaker cables too. Apart from that - that is all you can do using it mobile!

Posted on Sep 05, 2009

  • Robert Manning
    Robert Manning Feb 15, 2018

    The close Proximity of the CB transmitting antenna to the car stereo antenna. No, I disagree. I would first tune the CB antenna using a SWR Meter. Standing wave ratio meter. See YouTube. If the antenna is not "in tune" the signal will not travel up and out the antenna. It will come back to the CB Radio and "bleed", broadcast, into the surrounding vehicle and local area. The signal will energize the speakers of your stereo. You could remove the am/fm antenna and the energy would still energize the speakers. Yes you could try to use the ferrite rings. Again see YouTube.
    Tuning the antenna will give you more range with your signal getting out further and less signal to be driving your speakers. Much easier then tearing apart your car to get at all of the speakers.



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