jim rozen wrote:
In article wwC4e.3298$vt1.569@edtnps90, Ted Edwards says...

Gunner wrote:

frown on antennas other than TV. So it leaves out a long wire antenna.
My TV antenna (no cable in the park) is about 12' to the yagi.

Make an insulated base for the yagi pole and put insulators in the guy
wires. Now you've got a 12' whip antena. Should work pretty good.

If the mast is wood, you could wind a helix around it. If it has guy
wires, you could insulate at the top and bottom and make a sloping V
with multiple feeds to change direction.


Hmm. I like that. Could even be loaded at the bottom. The
trailer roof now makes a lovely ground plane. Am I allowed to
say 'ground plane' now?

Sure.... assume an infinite trailer roof.

Gunner may want to look at a grounded horizontal loop running around the
perimeter of the trailer roof, far enough from the edge that the antenna
isn't visible from the ground. Bring the end down the side of the
trailer a couple of inches and put the tuning capacitor inside.

Look at the HF antenna on the Chinook as an example.

Third picture down:
http://www.chinook-helicopter.com/Ju...hyosaur_8.html

Among the disadvantages are non-portability and the need to rip it off
when you move the trailer.

You don't want to get too wrapped around the antenna. Down at those
frequencies it takes a real big directional antenna- like a Beverage or
a Rhombic- to make a big difference. (The one at work that was used to
talk around the world is about the size of perhaps six football fields)
Otherwise you are sucking in as much noise as signal.

Make sure you use Monster cable for good reception.

Kevin Gallimore



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