[UK-CONTEST] Ground wires under elevated radials..?

[Giles Herbert]

Tangling is only one problem!  The "Woolies" will try and eat them!  RF currents are no deterent and neither is 240V AC.  My father used to do Aerial design in the days when network analysers were not known and the computer he used was a slide rule.  His measurements were with a Sig Gen, Wayne Kerr admittance bridge and an Eddystone 680X as detector.  All round him BBC World Service or its former incarnation would be going off in all directions at accumulated many megawatts.
 
This kit was under the array in question and failure of the power supply usually ment that the sheep had eaten the mains cable again!
 
Oddly, sheep's mouths seem to be dry and very high impedance!  Any sheep farmers reading this may have quantified this at somw time?

Giles Herbert
G0NXA
Often on 3.716 MHz



 
> Date: Wed, 24 Nov 2010 16:53:41 +0000
> From: gw0etf at btinternet.com
> To: uk-contest at contesting.com
> Subject: [UK-CONTEST] Ground wires under elevated radials..?
> 
> Hello gurus,
> 
> Have put up a 1/4 wave vertical for 40m with 2 elevated 1/4 wave radials ~2m off the deck. Situation is a wet field with lots of sheep pee and droppings and was wondering if it's worth throwing some ground radials underneath.
> 
> Low Band DXing suggests doing this but not directly ('galvanically') connecting them to the elevated radials - presumably improves the path for any capacitatively coupled currents from the elevated wires - the other plate of the capacitor I suppose....
> 
> I have a set of radials I could easily throw down for the weekend but a little worried the woolly ones might get tangled up in them.
> 
> Thanks and 73,
> 
> Stewart, GW0ETF
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