Subject:Re: Topband: Submerging variable caps in oil as substitute for vacuum
variables
The author points out (correctly) the tempco issues with oil dielectric.
Still I am intrigued by the thought of a remote tuning capacitor via hydraulic
tubing :-). The capacitor plates could be as simple
the top of the
oil would set voltage limit.
Tim N3QE
- Original Message -
From: Pete Smith N4ZR [mailto:n...@contesting.com]
Sent: Wednesday, January 29, 2014 05:42 PM
To: topband@contesting.com
Subject: Topband: Submerging variable caps in oil as substitute for vacuum
variables
The omega match for my shunt fed tower uses two 300 uF roughly 3000-volt
variables I bought from Henry radio a few years ago. I think
occasionally about running more than 100 watts on 160, but the cost of
the vacuum variables is a real issue. February QST has an article on
using mineral oil i
