| To: | jimlux <[email protected]> |
|---|---|
| Subject: | Re: [TowerTalk] Balanced Feedline for Ground Mounted Vertical? |
| From: | "Richard (Rick) Karlquist" <[email protected]> |
| Date: | Sat, 23 May 2009 10:44:46 -0700 |
| List-post: | <[email protected]">mailto:[email protected]> |
jimlux wrote: > clad steel. Aluminum is about 60% the conductivity of copper, so > considering it as a "tube", if you go 60% bigger diameter, you'll have The 60% is at DC. At RF is it the square root of 0.6, which is something like 78%. This is due to the curious phenomenon that the skin depth is thicker in the aluminum, which partially makes up for the lower conductivity. Rick N6RK _______________________________________________ _______________________________________________ TowerTalk mailing list [email protected] http://lists.contesting.com/mailman/listinfo/towertalk |
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