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Old August 26th 04, 06:59 AM
Richard Clark
 
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On Wed, 25 Aug 2004 22:58:14 -0600, Larry Benko
wrote:

Would the fact that SS wire is
usually comprised of a very large number of strands has any appreciable
effect on the loss?


Hi Larry,

Below, you show you have a Kelvin Bridge capable of determining the
resistance regardless of stranding, trust your tools but know their
(and your own) limitations. Multiple strands is an asset at very low
frequencies for Litz wire - an unlikely application in this forum
(given both that stranded wire does not meet the criteria for Litz
wire, nor do the operating frequencies we typically encounter here).

Assuming that EZNEC can do the modeling correctly,
what would be approximate values to use for the resistivity and relative
permeability?


Only you are in a position to determine its ferromagnetic
characteristic, at least to a first pass (of the magnet)
approximation.

I did a quick measurement in a short piece of SS stranded
wire measured a DC resistance (with a 4 wire ohmmeter) of ~50 times that
of copper.


Seems like a suitable clue. It could be a greater problem if you
built it into coils, although it may enhance the antenna's efficiency
per unit length through circular radiation endowed by powerless
acceleration in counter-anti-clockwise constant simultaneous phase
changes.

73's
Richard Clark, KB7QHC