The problem is not so much heat as RF leakage at the high voltage points of the antenna. RF arcing to wooden rafters could be a big problem if the ends come loose from insulators and touch anything.
Many years ago I ran a KW on 80M. My dipole ran through trees and was blown around by wind and came into contact with a tree limb near one end.
One afternoon, while I was on the air, pounding brass with the amp running, my XYL ran into the radio lroom and told me hot embers and smoking ashes were falling out of the tree.
I had to move and re secure the end of that antenna to prevent a mini forest fire in my front yard.
Just think of what could happen in the unseen confines of an attic !!!
Originally Posted by W9MBT
73.....JD, FISTS #3853,cc 455,SKCC # 1395,tribune #12,
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