[TowerTalk] Raised Radial Spacing

Jim Brown jim at audiosystemsgroup.com
Mon Oct 27 06:32:48 EDT 2025


On 10/27/2025 2:59 AM, Rob Atkinson wrote:
> Somehow we got into on or in ground radials.  Not helping the original question.

Huh? The original question WAS about radials, and the references I 
posted were about both ground radials and multiband verticals on the 
ground and on the roof of a typical wood frame home. In the latter 
piece, I addressed how to deal with multi-band verticals that need radials.

When I post a link to something I've written in response to a question 
or topic, I don't waste everyone time with stuff that in the link!

And the performance of vertical antennas DOES depend strongly on soil 
electrical properties both in the near and far fields, and to different 
effect. That's also in the first link, in great detail. The difference 
can be as great as 10-12 dB, 1-2 S-units!  Conversely, horizontal 
antennas aren't affected by soil properties, on by their height. That's 
a VERY important factor when thinking about what HF antennas to deploy!

73, Jim K9YC



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