[TowerTalk] Balanced Feedline for Ground Mounted Vertical?

[Richard (Rick) Karlquist]

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