Struggling with high noise levels. With the antenna disconnected from its NMO mount, almost no noise with the car running.
Given this, should I be bothering with filters on the power wires or trying direct battery connection? Noise doesn't seem to be coming through the power wires, but through the antenna.
I know CB is by default noisy, but this is unusually noisy and to the point where the its not really useable as a countermeasure.
What steps should I be taking to control the noise?