I made this system primarily for its mechanical properties. I will make
some measurements one fine day....
David
G3UNA
----- Original Message -----
From: "Bob Cunnings" <[EMAIL PROTECTED]>
To: <elecraft@mailman.qth.net>
Sent: Sunday, January 06, 2008 11:06 PM
Subject: Re: [Elecraft] dipole antenna efficiency
The capacitance between individual strands in Litz wire limits it's
usefulness above 1 MHz or so. W8JI has an interesting discussion of
skin effect at:
http://www.w8ji.com/skindepth.htm
Bob NW8L
On Jan 6, 2008 3:54 PM, David Cutter <[EMAIL PROTECTED]> wrote:
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.
>
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