Re: dipole antenna efficiency
Posted by
David Cutter on
Jan 06, 2008; 10:54pm
URL: http://elecraft.85.s1.nabble.com/dipole-antenna-efficiency-tp458071p458087.html
I've used several strands of enamelled copper wire twisted together. I
usually twist 3 sets of 3 of quite thin wire, whatever is on hand; 0.2 to
0.45mm dia is easy to use; after twisting I give the group a good pull the
stretch and stiffen it a bit but it still remains very flexible indeed and
does not have a memory effect. I tie the wires to a fence post then fit the
other ends into an electric hand drill 25m, it's surprising how much
twisting is needed. You must not let the wires touch the ground. It is
also very slippery and does not cling to other wires which I find a great
advantage when manipulating multi-wire structures. I call it "multi twist".
David
G3UNA
> An "El Cheapo" approach might be to use multi-conductor cable
> instead of a single, fat conductor to minimize Skin Effect losses.
>
_______________________________________________
Elecraft mailing list
Post to:
[hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help:
http://mailman.qth.net/subscribers.htmElecraft web page:
http://www.elecraft.com