Army field manual, FM 24-20 "Field wire & field cable techniques" has
WD1/TT as 4 tined copper, and 3 galvanized steel strands.
73
Bruce-K1FZ
www.qsl.net/k1fz/bogantennanotes/index.html
----- Original Message -----
From: "HAROLD SMITH JR" <w0rihps@sbcglobal.net>
To: "Craig Clark" <jcclark@myfairpoint.net>; <topband@contesting.com>
Sent: Friday, August 30, 2013 11:59 AM
Subject: Re: Topband: WD1 and WD1A wire
Craig,
When I was in the Army in the late 50s, We used WD1TTwhich sounds like
WD1. I see that someone has it on eBay.
73..Price W0RI
These are two different kinds of wire.
WD1 is designed for the old tip and ring phone systems of the 40's-60's
and
consists of two twisted seven conductor wires, three galvanized steel and
four tinned copper conductors.
WD1A came out in the 70's and is smaller and joined together like zip
cord.
It has the same conductor combination as WD1.
They also have different impedances so their feedline matching is
different.
Craig
Craig Clark K1QX
QX Electronics
PO Box 209
107 Fitzgerald Rd
Rindge NH 03461
(603) 899-6103 office
(603) 520 6577 cell
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