Well, I am at it again, trying to re-invent the wheel.
In looking through some old qst's last night (cable was out) I found an
article about a 160 meter half sloper that used inductive loading at the
feeedpoint. I know this is not the best way to do it but, If I can make
this work then I know I can do it and may venture into other things.
Now the gentleman in the article used 90 turns on a 1 inch form of fairly
small wire, and was using a 40 foot tower for the other half.
I tried to guess and did not even come close, please read on.
This is for a friend of mine's place that wanted something more on 160. He
has a 60 foot tower and fairly limited space. Here is what I did.
I wrapped 41 turns of #14 wire on a 3 ¼ inch form, then ran about 80 feet
of wire from the other end of the coil.
Net return: ZILCH It did not even come close to 160 meters, we did find it
to be a fairly good recieve antenna on 1.2 MHZ
though.
Now what is it that I need to change, or better yet, can someone point me
to something (formula, web page, etc.) that will allow me to do it
correctly the second time.
Another friend of mine has the specs to build a base loaded antenna with a
8ft.whip(for mobile use). Would things be proportional. i.e. if it uses an
8 foot whip and 135 turns on a 3 inch form could I use an 80 foot "whip"
and 13.5 turns?
Please help.
The dumb kid in W6
Mike...NO6X
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