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Re: Topband: Best wire antenna for roof top location

To: topband@contesting.com
Subject: Re: Topband: Best wire antenna for roof top location
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Mon, 10 Aug 2015 20:04:59 -0700
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Actually, what he says is not use the high level media to model a RADIAL system.

While playing with this model, I changed the characteristics of the higher level media to have far less conductivity. The result suggested that my model was good for what I was trying to understand -- that is, the very low far field lobe was unaffected by the conductivity of the high level media (that is, the roof).

73, Jim K9YC

On Mon,8/10/2015 6:48 PM, Guy Olinger K2AV wrote:
There is a rather stern W7EL caution in the EZNEC doc about using two
ground media. He particularly nixes using the inner media as sea water
to mimic a high conductive surface.

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