Question about Uniden PC78ELITE 40-Channels Base CB Radio
If this is a high-pitched tone it probaly is from the DC-AC inverter that provides the high voltage to light up the front panel. Normally, this is barely audible, but I've seen a few that are loud enough to be annoying. It may be possible to install a small filter in the power line to the inverter, inside the radio. I've never tried this but if the inverter is the source of the noise, this will be the most practical way to isolate ite & eliminate the problem.
This should onlty be attempted byan experienced CB technician.
Posted on Sep 29, 2008
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Posted on Jan 02, 2017
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