[TZ] Elevated radials vs buried ones

Dr. William J. Schmidt, II bill at wjschmidt.com
Tue May 17 23:47:20 CDT 2016


That's a loaded question.  If you intend on coupling your antenna to use the
salt water as a counter poise or ground plane (which isn't actually all that
good of an idea), you need some low impedance way to couple it.  Wires
(radials) are easiest, but other stuff could work too.   Again, the trick is
the radiation angle.  There are plenty of people that think pouring salt
into the soil helps their radials work better... well sure it does change
their impedance (coupling with the ground) and therefore the effective
length of the radial.  As someone else pointed out, modelling this is the
only way to determine for sure what will happen (and NEC4 is the only thing
I use for this kind of thing).

Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ 

Owner - Operator
Big Signal Ranch - K9ZC
Staunton, Illinois

Owner - Operator
Villa Grand Piton - J68HZ
Soufriere, St. Lucia W.I.
Rent it: www.VillaGrandPiton.com

email:  bill at wjschmidt.com

-----Original Message-----
From: tech-zone-bounces at radiolists.net
[mailto:tech-zone-bounces at radiolists.net] On Behalf Of RADIO DOCTOR

Does one need radials in salt water?

On Tue, 17 May 2016, Dr. William J. Schmidt, II wrote:

> Elevated radials are almost ten times more efficient that buried 
> radials. The trick is getting the radiation angle right. Many papers 
> written on the subject. There is a station in SF bay just before the 
> airport in the water with elevated radials.
>
> Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ
>
> Owner - Operator
> Big Signal Ranch - K9ZC
> Staunton, Illinois
>
> Owner - Operator
> Villa Grand Piton - J68HZ
> Soufriere, St. Lucia W.I.
> Rent it: www.VillaGrandPiton.com
>
> email:  bill at wjschmidt.com

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