[TowerTalk] 4-square over existing groundscreen
Peter Voelpel
peter.voelpel at t-online.de
Tue May 17 19:03:15 EDT 2005
Tom McAlee tom at klient.com wrote
>I was able to compare the 4 square with the original radial system and
>with the new radial system against a 3rd antenna (a wire delta loop) and
>A/B tests showed significant improvement.
>And, with the single radial system the feedpoint impedance was pretty
>high.
>I don't recall the exact number, but it wasn't nearly as low as the 36 ohms
>I got with the radials under each vertical. That tells me the ground
losses
>were a lot higher.
Thank you Tom and others who replied by mail,
I think it might be a good idea that I, before starting with the 4-sq, to
run some tests with a single vertical on 40 with the possible combinations
and do measurements.
But it seems to be preferable that the 4sq will get its own radial system
73
Peter, DF3KV
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