I tried Alumoweld once and it dissolved within 5-10 years.
Gene / W2LU
----- Original Message -----
From: "Jim Lux" <jimlux@earthlink.net>
To: <towertalk@contesting.com>
Sent: Sunday, September 25, 2011 11:56 AM
Subject: Re: [TowerTalk] FW: low band antenna without good ground
> On 9/25/11 1:25 AM, km5vi wrote:
>>
>>> From ON4UN's Low-Band DXing regarding ground enhancements using mesh
>> screening... "Steel is a very poor conductor at RF"
>
>
> Steel may be a poor conductor (skin effect makes it worse), but it's
> still orders of magnitude better than soil.
>
> think of radials as increasing the conductivity of the soil. If you
> have a conductor that fills 1 millionth the cross section, and is a
> million times the conductivity, you'll just match.
>
> Soil is on the order of .5 to 30 milliSiemens/meter
>
> Copper is 60 megaSiemens/meter
>
> that's 9 orders of magnitude.
>
>
> I suppose if one is comparing an antenna with copper radials to one with
> aluminum to one with steel, all with the same size conductors, the
> copper will be better than the others. But, comparing to no radials,
> they'll ALL be better, and that's usually the ham situation.
>
> If you put down 10 times as much aluminum as copper, clearly, you're
> better off with the aluminum.
>
>
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