On Mon, 19 Apr 2004 00:10:50 GMT, zeno wrote:

Anyone just use lengths of copper pipe or tubing? You might only need a
tiny spacer every 5 feet or so. Was that you or someone else who made the
ladder line out of tubing shaped like a sine wave.... hi hi

seriously, though, if one needed a section of ladder line to really stay
put (say a section which gets nervously close to other naughty metal things
or wire, why couldn't you fabricate just that section out of copper tubing
and then go the rest of the way with wire? Are there impedance issues when
changing the wire thickness along the way?

73

Bill

Cecil Moore wrote:

zeno wrote:
I just found several hundered feet of used #10 solid copper, insulated
wire, it was pulled out of my well (submersible 240V pump) a few years
ago. Any reason, aside from weight, not to use this #10 wire for
constructing diy ladder-line?

Zeno, all of your suggestions would increase the weight of the
feedline, and possibly stretch the antenna. FYI, a 500-ft. spool of
#14 or #12 insulated, stranded copper wire from Lowe's Home
Improvement (or Home Depot) runs about $15.00

Bob
k5qwg



Maybe you should patent the idea of a self-supporting transmission line?
--
73, Cecil http://www.qsl.net/w5dxp

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