"KBa" wrote in message ...

# Hi all

# Problem exists how to get reliable insulation to split driven element
# and support rod which is exposed to RF voltage ?
# Fiberglass is told to be sensitive creating conductive coal brigdes
# which creates true resistive short at driving point ? (at least one
# fiberglass tubing is done so... gap was 2 inches )

# How to improve insulation ? Ptfe-shield over fiberglass rod, heat shrink
# tubing, varnish layer ?

# tnx oh6io

I'll leave the specifics of your question to the experts.

But, worth mentioning is that once you have selected a material, plop some
in a microwave along with something like a a container of water. Then see
if your insulating material stays cool.

Wayne
W5GIE