Author: gwoodworth@andoverbank.com (Andover Bank - gwoodworth)
Date: Wed, 4 Apr 2001 13:54:24 -0400
Doug Similar antenna has been up for 2 years. Full size 80M vertical of = aluminum tubing with a wire 160 inverted L along side and then = horizontal to tower with 64 on ground radials, 60 to 70 ft l
G'day Doug, Jerry and all, I was very interested to see that the close spacing of 6" to 12" apparently (i.e. modelled on EZNEC) caused less interaction with parallel-fed inverted-Ls than spacing them
VK6VZ: A cautionary note - NEC-2/EZNEC can give unreliable results when wires are close together (in WL). In my models of the Force 12 C-3, for example, as well as the factory's, the feedpoint values
NEC modeling of closely spaced wires can be accurate. I have done extensive modeling of closely-spaced wires at less than 2 inches at HF, including multiband feeds similar Force 12's. When doing thi
N4ZR: K9AY: Gary's correct, but there do seem to be limitations, even when these precautions are taken. I followed exactly the procedure he describes with my C-3 modeling, and while gain and pattern
Hi Gary, Earl, Pete, Bob and all, Thank you for some excellent information. As a result of Gary K9AY's remarks below and my own practical experiences, I think I will make up some 12" spacers from PVC
VK6VZ: You can convert soft-drawn copper to hard-drawn. Tie one end of the copper wire to something secure. Get a good grip on the other end and just lean most of your body weight against it (or use