"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 used a chunk of circuit board material about 5 mm thick. I don't recall
where I got it or why it was so thick but it worked very well for a short
period. Can you go to a surplus store and root around in their junk boxes
for old circuit boards? If you spray them with electrical varnish after
making the connections, you should get some time before failure.

"Sal"