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This
makes very sanitary antenna installations easy. Your radio manufacturer
may not recommend this, but I can tell you from 3 years experience,
they work great. I think that the ground range is better with this
antenna than it is by running it out the tail. I am using it in
all of my racers, electrics, and sport aerobatic airplanes.
They are simple to make. The only thing that you have to buy is
about 3" of 3/8" shrink tubing. The blue tube that I use
is a straw for the tall cups from the nearest 7-11 or what ever
they are called in your area.
To assemble one, take the straw and drill a hole in each end about
3/8" from each end. Then insert your radio antenna from the
inside through one of the holes in the straw. Put a piece of 3/4"
shrink tubing over that hole to hold the antenna wire while you
wrap the rest of the wire around the straw. Keep
about 6" of the wire between the receiver and the end of the
tube. The winds are about 3/8" apart. Make them as neat as
possible, but do not get carried away with it. When you get to the
end, from the outside place the wire through the hole in the other
end of the straw. Pull it tight and put the shrink tubing on that
end. Next step is to put about 1 1/2" piece of shrink tubing
where you want to attach the Velcro to the tube. If you use a shorter
straw, then make the winds closer together.
Put matching Velcro on the inside of your fuselage and install your
receiver and antenna in one piece.
The biggest problem I
have encountered with this system is storing the receivers when
not in use. I do not have any drawers long enough for the straw.<G>
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