El 30-08-12 20:49, KBa escribió:
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

Assuming power of about 1 kW and a HW dipole (say 60 Ohms), the
voltage will be about 350Vp. I can hardly imagine that a plastic gap
of 0.05m will degrade to failure because of tracking.

Make sure you have UV resistant rods, and/or add some layers of UV
resistant (marine quality) coating.


--
Wim
PA3DJS
www.tetech.nl
Please remove abc first in case of PM