Bruce -
I'm not sure which post you are responding to. If mine, the idea (as I recall) was simply to move the antenna about a meter upward to the top of the TM's rear wall, and mount it on the aluminum roof skin, making it a monopole over a somewhat mis-shaped ground plane. From there, it can shoot across the top of the TM toward the tow vehicle. In this configuration, the aluminum roof skin becomes the ground plane, rather than being a barrier or shield in the propagation path. This barrier seems to be the difficulty in most of the weak-signal discussion above.
If your thought is to move the antenna forward to a position nearer the TM tongue, I'm sure it would work electrically. But I'm not sure that I would want to run a cable, either video or RF, along the entire length of the TM. The mechanical difficulties - securing it against flapping in the wind, crossing the divide between the rear and front shells, etc. - would be annoying, though not insurmountable.
Could you elaborate a bit more about your approach?
Bill
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