Author: Hans Hammarquist via TowerTalk <towertalk@contesting.com>
Date: Wed, 28 Dec 2016 19:51:20 -0500
I think Partick has a point. Why is the current trying to go through the insulating top layer of the copper wire. Now, if you study the skin effect and apply the formulas you will find out that the s
Author: Patrick Greenlee <patrick_g@windstream.net>
Date: Thu, 29 Dec 2016 07:36:56 -0600
Hans, thanks for the pat on the back for Pat. Why would the corroded layer conduct enough to carry a sizable amount of current when it is in parallel with good copper? Think of various resistors conn
Author: Hans Hammarquist via TowerTalk <towertalk@contesting.com>
Date: Fri, 30 Dec 2016 13:47:09 -0500
That equation is valid for a homogeneous conductor. When you have a sandwich of several layers with different conductivity you have to calculate it more thoroughly by using the formula for each of th
yes, the microwaves101.com reference from a couple days gives the multilayer equation. The point still is that a layer of (very) bad conductivity over a good conductor will only have a small (if any
UV and weather degraded THHN wire was replaced with new bare wire and 60 ohms resistance disappeared that was visible only at RF. The wires were all pulled between posts, and the old wire was NOT sag