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List:       elecraft
Subject:    Re: [Elecraft] Radials for Verticals
From:       Bill Adams <af4b () att ! net>
Date:       2014-06-30 20:50:44
Message-ID: 1404161444.82046.YahooMailNeo () web184305 ! mail ! ne1 ! yahoo ! com
[Download RAW message or body]

The soil property that relates to electrical conductivity is cation exchang=
e capacity or CEC. A web app that can help you estimate conductivity is=A0W=
eb Soil Survey located at http://websoilsurvey.sc.egov.usda.gov/App/HomePag=
e.htm=A0

After finding your location, navigate to chemical properties and look for c=
onductivity.


Bill AF4B
 =



On Monday, June 30, 2014 11:52 AM, Fred Jensen <k6dgw@foothill.net> wrote:
  =



On 6/30/2014 9:37 AM, Doug Person via Elecraft wrote:

> Getting them
> underground enough so a horse with steel horseshoes won't inadvertently
> dig one up while engaging in typical horse play ("horsing around" is a
> phrase with real meaning around here).

We refer to that as a "fruitcake attack."=A0 Never know what provokes it =

but something gets into their heads.=A0 I've come to the conclusion that =

there's quite a bit of extra room in their heads. :-))

> So I guess my biggest concern is that the wire will corrode rapidly as
> K9HZ has suggested in a direct email.=A0 I have numerous lengths of old
> aluminum lying on the ground at my antenna site.=A0 There does not appear
> to be the slightest bit of visible corrosion.=A0 But perhaps being
> literally under ground as opposed to lying on the ground makes a big
> difference.

I think that will depend on the pH of your soil.=A0 I had some buried #12 =

Al wire that traversed a flower bed with a couple of Camellias which =

like acidic soil.=A0 The wire corroded badly in the bed from the =

fertilizer but the rest was as good as when I buried it when I finally =

pulled it up.

>I might turn it
> into a very large loop antenna at about 40 to 50'.

My guess is that you'll be happier with the loop than a non-resonant =

vertical.=A0 Loops are usually quieter than verticals too, although that =

may not be a problem for you.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org



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