[TowerTalk] question on copper wire used for hairpins and

[David Gilbert]

As a generalization that isn't true.  It would all depend upon the 
conductivity of the "copper tarnish".  If the tarnish was highly 
conductive it wouldn't matter of course, and if the tarnish was an 
insulator the current would just travel beneath it as you say.  But if 
the tarnish was mildly conductive ... i.e., lossy ... it would have an 
effect if it was thick enough and the skin effect shallow enough.  In 
this case, of course, the thickness of the tarnish is likely much less 
than the skin effect depth.

Dave   AB7E




On 10/14/2016 5:15 AM, Jim Thomson wrote:
> ###  Dull and tarnished has zero effect.  The rf current simply travels beneath the  tarnish.
> Jim   VE7RF
>