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## [TowerTalk] Re: Lightning ground "Holy Wars"

 To: [TowerTalk] Re: Lightning ground "Holy Wars" w8ji.tom@MCIONE.com (Tom Rauch) Mon, 01 Jun 1998 09:26:23 +0000
 ```To: > Date: Fri, 29 May 1998 14:00:11 -0600 > From: Dave D'Epagnier Hi Dave, > I can Tom. Its a pretty well known fact in the industry that > ribbon conductors have lower inductance than round wires of the same > cross sectional area. > In fact, the inductance of a ribbon of a given > width is roughly equivalent to the inductance of a round wire with > diameter equal to that width. In other words a 1" wide ribbon conductor > would have about the same inductance as a 1" diameter wire! That has always been my understanding, that inductance is about the same if "width" and length is about the same and if the length is much greater than the width. So a 1" wide strip has about the same inductance as a 1" wide round tube, but with the same amount of material a flat strip has less inductance because it can be made wider...... However, RF resistance is much less for the round conductor! That's because it has more uniform current distribution over the surface. With equal * surface areas *, a round conductor has much less resistance at high frequencies than a flat conductor. Somewhere between the two is the best compromise at any given frequency. I'm trying to get a feel for what that compromise is. > The equations are: snip Thanks. I'll play with them. The reference can be derived from data in Magraw Hill > Electronics Engineers' Handbook. Is that the one by Fink? I'll try to get find a copy. 73, Tom W8JI w8ji.tom@MCIONE.com -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: owner-towertalk@contesting.com Search: http://www.contesting.com/km9p/search.htm ```
 Current Thread [TowerTalk] Re: Lightning ground "Holy Wars", Tom Rauch <= [TowerTalk] Re: Lightning ground "Holy Wars", Tom Rauch [TowerTalk] Re: Lightning ground "Holy Wars", Dave D'Epagnier [TowerTalk] Re: Lightning ground "Holy Wars", Tom Rauch [TowerTalk] Re: Lightning ground "Holy Wars", KEN KOCH [TowerTalk] Re: Lightning ground "Holy Wars", Kurt Andress [TowerTalk] Re: Lightning ground "Holy Wars", Dave D'Epagnier