Thread: Impedance of open wire feeder using multi-strand wire?
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Old October 27th 10, 02:14 PM posted to rec.radio.amateur.antenna
Ian Wade G3NRW Ian Wade G3NRW is offline
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Default Impedance of open wire feeder using multi-strand wire?
From: steveeh131047
Date: Wed, 27 Oct 2010 Time: 05:10:05

Ian,

Here's how results from your approximation formula diverge from more-
accurate Zo figures:
http://www.karinya.net/g3txq/temp/ladderline_zo.png

73,
Steve G3TXQ


But I take it that your picture still applies to single-core conductors,
and very fat conductors at that.

With the feedline I have in mind, S=55mm and d=1.2mm, so S/d=27.5, which
is way off the end of the scale in your picture.

--
73
Ian, G3NRW
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