"Channel Jumper" wrote in message
...
gareth;815654 Wrote:

[b]Then run a "shortish" earth braid from the vehicle's chassis to the
antenna.[b]

You are confusing earth ground with a counter poise..

No, I'm not.

To establish a counter-poise, the counter-poise needs to be directly
beneath the antenna.

No, it does not. You are providing the second half of a pendulum

Just hooking some braid to the antenna won't do anything.

Yes it will, taken together with the mass of the vehicle, as I suggested.