This may help. On older vehicles, unless one used "resister" type spark plugs, one would get a lot of engine noise through the radio.
The whine probably comes from the alternator. You will need a supressor on the alternator output. Another way, is to use an in line filter in the power supply, to the CB, to stop interference on the power supply from reaching the radio. You need an auto shop to check the alternator. The in line filters can be got from radio Shack and look like an in line fuse.
There was interference with the radio signal.
Electrical interference is messing with my radio reception.
1999 saturn sc1 , need radio code. 4 digit from radio is 1407
Gordon William Ingram has written: 'Radio interference suppression' -- subject(s): Interference, Radio
Henry D. Moreland has written: 'Radio interference from conductor corona' -- subject(s): Radio, Interference
Interferometry
Radio frequency Condensers (Capacitor) is used to reduce or eliminate ignition noise being received by the broadcast radio in the car.
Fiber-Optic
interferometry...
Prevent radio interference.
XM radio does not have static interference. It's a digital signal, so you'll either get a crystal-clear sound or none at all.