Question about Cobra 148 GTL 120-Channels Base CB Radio
I have the same problem with my Cobra 148 GTL, When the radio is on there is a steady tone, similar to the sound of morse code is the speaker. The volume control has no effect on the tone. You can still hear other stations through the speaker, but the tone overwhelms it. It will also transmit this tone mixed with your own audio. I don't know if this is related but if I adjust the mic gain control the tone will change pitch. Have tried different working mic and shorting the RX/TX mic pins to earth one at a time and the tone is still there. So I don't belive its the mic. Can you help?
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Posted on Jan 02, 2017
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