Take a look at the attached image..

This is how I set the antennae wire in the LCM...I've just tried it out (had to borrow my neighbour for this technical test) by leaving the boat in the lounge and me going walkies down the stairs, out of the front door, over the road and down the footpath under the trees a good 150 yards away, with the building, a kiddies play park and half a forest between me and the boat.
We were in contact via mobile phones, and neighbour reported no loss of movement and no unwanted twitches on the motors at all. I stopped them, started them, one ahead and one astern...no problem. I told him what I was doing and what should be happening, he told me what was happening....all was well. What happened in here corresponded to what stick inputs I was making out there.
So gentlemen...now we know.
Thank you all kindly,
Rich