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Old May 14th 06, 11:19 PM posted to rec.radio.amateur.antenna
Owen Duffy
 
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Default 100 Ohm Twin Lead

On Sun, 14 May 2006 16:34:44 -0400, Sonny Hood wrote:

I have an antenna that needs 100 ohm twin lead to match the impedance
of the feed point. The 450 ohm lead has messed up the match and
screwed up the resonance, does anone know of such an animal?


To answer your specific question, ZIP cord is close to 100 ohms Zo.
However, it is relatively lossy (~3.5dB/100' at 10MHz).

K8ZOA measured ZIP cord characteristics and reported them here a year
of three back, Google for the info.

There were commercial low impedance twin lines for RF use, but they
are now obsolete (for good reason).

Owen
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