[TowerTalk] Verticals on a Hill

[Grant Saviers]

My verticals on the beach use 2 elevated resonant radials and had great 
results.  There are lower losses because of the saltwater side but the 
significant improvement IMO is due to the very low angle gain 
improvement from the near and far field effects of the salt water.

Landward, the pattern is just like any similar vertical over regular 
earth. Some put beach verticals up with radials in contact with the 
earth, but then they are in contact with a lossy material, which defeats 
much of the benefit IMO.  If a "no touch" multiband radial system is a 
requirement then maybe that is an acceptable tradeoff if a standard 
radial complement is used.  I use banana plug jumpers to make my 
elevated radials quickly adaptable to 2 or 3 bands 20 > 10m. A 
telescopic whip tunes to resonance, usually low 30's ohms.  A CrankIR 
for 40 and up.

At the North Cooks, the 160m extended CrankIR vertical performed very 
well near the beach, but the single elevated radial voltages were truly 
awesome.  The vagaries of 160m prop are beyond my pay grade, but for 80m 
I don't think there is much debate about lowest angle is best for long 
haul DX.

Grant KZ1W

On 1/20/2019 10:23 AM, Wes wrote:
> Personally, I don't understand all of the fuss about HFTA.  In the 
> general case (sans 200' towers), aren't you pretty much stuck with your 
> environment with little to do about it?
> 
> But regarding the benefits of saltwater locations, I wonder whether they 
> are the result of lower angle radiation peaks or simply the increased 
> efficiency of the ground plane.  In this query I'm considering 80-meters 
> and more particularly Topband, where higher angles that get through the 
> E layer quicker can be beneficial.
> 
> Wes  N7WS
> 
> 
> On 1/20/2019 9:59 AM, VE6WZ_Steve wrote:
>> ...
>> This analysis of an 80m vertical over sloping ground certainly shows 
>> that a  significant low-angle gain benefit of up to 11dB over a flat 
>> terrain vertical.  I include a comparison to other plots from Johns 
>> book showing how a vertical over saltwater shows a similar outstanding 
>> low-angle response, which we have all heard in action from various 
>> well place DX-peds on the saltwater.  I extrapolate this to 160m.
>>
> 
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