[TowerTalk] Vertical Antenna Question

[Jim Brown]

On 4/8/2020 7:23 PM, Gary wrote:
> I used my DX Engineering gift certificate to buy a copy of the "Champion Radio HF Vertical Performance - Test Methods & Results". I really enjoyed the book and learned a lot.

That test report is a very valuable resource. So is the companion report 
on tri-banders.
> 
> It looks like a vertical is the only antenna I am going to get in my terraced back yard. Has anyone done a similar look at verticals where they looked at radials vs no radials? There are a lot of claims out there about verticals that work without radials. The above test looked at some of those antennas but they were mounted over a radial field...

Here's both a slide deck on the subject and an app note that I wrote for 
National Contest Journal a few years ago. That report was the "jumping 
off point" for my work. Note that performance of verticals is STRONGLY 
dependent on soil conductivity, and these documents shows that, in 
general, most work better if they can be roof mounted.

http://k9yc.com/VerticalHeight.pdf
http://k9yc.com/AntennaPlanning.pdf

73, Jim K9YC