SWR

True, NGP antennas are very picky about coax length. That was an issue I had with mine. My range was a meek 3 miles but it was enough for my coach. A neighbor had bought a NGP balcony antenna for a low key setup, the low key install needed 50’ or coax. Not very efficient at all, but I guess you do what you have to do.

My “mobile” base with my travel trailer is now a 20’ pole that breaks down into two sections to store underneath when traveling. I’ve got a homemade dipole I use horizontally, the mounts that hold the pole are just outside the window so no need for a rotor. Mind you it’s in a travel trailer, not using that setup traveling down the road. Works well when I go camping at the lake.

 

Where do you mount the TT antenna? Rear bumper or tongue?

Thx

 

Mine is more of a base antenna mounted on the side via pole. Essentially the same as putting a base antenna next to a house, just in this case, temporary.

It started with a flagpole buddy, then when the plastic cap snapped I figured out my own rigging as an “easy up, easy down” type system.

 

Yeah I remembered after than a ngp antenna uses coax as part of ant,unlike a normal set up..If I remember correctly they are not nearly as efficient as a gp set up..

 

That’s correct. I have always heard that NGP antenna systems didn’t work the best. But It was just hearsay, so I didn’t really want to say anything to discourage the OP. On the other hand with fiberglass vehicles, you have to do whatever it takes.

 

Here's an interesting article on standing waves.
https://www.eham.net/articles/23317