"Randy" wrote:
I drive a 9900 International. I am getting a loud whine in the CB
speaker, but not in the radio speakers, even though they share the dual
antennas. The whine increases and decreases with the rpms of the motor.
After disconnecting the coax from the CB transceiver the whine is gone.
Does this mean the coax or antennas are definitely the problem? ... or
are they just picking up on a problem with the alternator? The coax will
be extremely hard to replace, maybe impossible since this is a company
truck. The alternator would probably be easier to repair.

Any help to eliminate or even reduce the whine would be greatly
appreciated.

Sounds like not enough ground on your antenna. How's your swr?

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