Thanks for all the replies. I've tried both mag mount and "set-screw"
mountings for the antenna; no difference. But will check the grounding from
hood to body. I'm inclined to think the noise is being picked up by the
antenna, since it still noisy with internal battery power.



"Steve Stone" > wrote in message
...
>
> Kenwood mobile ham gear like the triband 742 D came with a huge toroid
> hung noise suppressor on the power input leads that prevented just about
> any noise from getting in that way.
>
> Bond your hood to the body with a hunk a flat ground cable.
>
> Try moving the antenna and coax leading to it someplace else ( I assume
> you are using a mag mount ?)
>
> Try making sure your antenna has a good ground.
>
> try an external speaker with a built in DSP noise reduction circuit.
>
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