I didn't study this site too deeply, but KP4MD has the most appropriate
characteristics on her page, here, http://www.qsl.net/kp4md/zipcord.htm.
You might also look at Owen Duffy's pages. His transmission line calculator is
great. I think the last entry for zip 105 is zip cord, but you should email him
and ask. The page is at http://owenduffy.net/calc/tl/tllc.php
vy 73,Dave N4KD
On Tuesday, November 7, 2017 9:12 AM, Michael Blake <k9...@mac.com> wrote:
My 80M antenna is a low, loaded dipole fed with balanced window line. As the
center impedance is low the high impedance window line tries to invert the
impedance to a much higher value. The feedline is only 25' long and terminates
in a 1:1 balun which is then connected to a remote autotuner via 24 inches of
9913F.
The question is:
Has anyone run any RF loss tests on the commonly available 12 gauge clear PVC
insulated "speaker" wire. The impedance would be quite low, probably in the 90
ohm range, and world certainly handle the applied power (500 watts) but I have
not been able find any information regarding RF loss.
Michael Blake
k9...@mac.com
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