[600MRG] Short Radial Observation

[Ben Gelb]

Hi Andy -

I'd take 350 feet. I have maybe 8 radials of 20-30 ft each.

Did you do a measurement w/ no radials at all?

My experience was that the first radial (and/or attachment to house ground)
makes a significant difference (maybe 20 ohms), and its diminishing returns
after that (maybe an ohm or two of feedpoint Z change).

On Tue, Aug 28, 2018 at 7:09 PM, Andy - KU4XR via 600MRG <
600mrg at mailman.qth.net> wrote:

> Greetings all:
>
> To start - 350 feet of radial wire is miniscule on 630 meters .. for a few
> days since getting my new antenna up,
> I have been experimenting with some short radials underneath the antenna..
> I tried running from the ground rod
> out 50 feet - across 5 feet - and back to the ground rod - then repeat,
> until that wire ran out.. I ended up with
> 10 wires - extending 50 feet - covering 45 feet of earth - directly
> underneath the top loading.. Noticed NO change
> in any antenna parameter.. Next I am simply running 3 wires - each about
> 115 feet long from my ground rod,
> thru my back yard, the ends are about 20 feet apart - so covering about 40
> feet of earth.. Still NO Change ..
> The wire is small guage Aluminum Electric fence wire ( just to add to the
> record ) .. I have done this same
> experiment - placing the wires in various locations, and the same result
> everytime - NO Change in any
> antenna parameter... not a milliamp of RF current, or a " point " of VSWR
> change.. Seeing there is no change
> appearing in any placement; is it a reasonable assumption that this small
> amount of " wire on the ground "
> serves no useful purpose to the antenna system ??
>
> Thanks, and 73:
>
> Andy - KU4XR
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