Re: Stereo sound system ???
If the ground is bad on the 2-way radio antenna, or the antenna is very badly tuned to the frequency band (wrong length whip or wrong coil, if needed), some of the energy during transmitting may come back down the outside of the antenna cable and cause a hum in the speakers and possibly absence of music. The hum could occur any time the amp is powered, even if the music source is off.
Someone said "Making good decisions comes from experience, experience comes from bad decisions." I say there are three kinds of people: those who learn from their mistakes, those who learn from the mistakes of others, and those who never learn.