I have an '00 Intrepid and an '02 Stratus, and whenever I try to use a battery operated CB radio (for trips) or a "ham" radio, whether with internal or external antenna, I get lots of ignition noise when the car is running. It's not a "whine" but more like a speed-intensive "pop." The noise is present even when running of the power outlet. Shut off the engine, and the interference is gone.
Wondering what I could do to eliminate the noise. Would running the units directly off the battery (or in my case the positive and negative terminals in the engine compartment) help.
Thanks for any clues.