[TowerTalk] Copper Vs AL Was UV and WX deterioration of THHN insulation, and effects

[Roger (K8RI) on TT]

How does the resistivity of the Copper Chloride (What you get with 
Chlorine and moisture  on the surface of the Copper wire) on the surface 
of the Copper wire compare to the resistivity of Aluminum wire?  I ask 
as I've seen number of posts on newsgroups where Al wire was being used 
for radials.

Roger (K8RI)