Jamie, When I had a problem like that on a matching system, I had someone else key the transmitter and watched the feedpoint at night. It took ten seconds to see the problem ! Fireworks had nothing on what happened.
73 Don, G3BJ / G5W -----Original Message----- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of James C. Hall, MD Sent: 30 January 2014 00:27 To: topband@contesting.com Subject: Topband: Bad tower shunt capacitor I have an omega matched 120 foot tower and I apparently have a bad vacuum variable capacitor. Upon applying more than about 300 watts, the SWR goes off scale. Tuning it out and trying again, yields the same thing. The question is which capacitor is the culprit. These are surplus Soviet caps obtained from the Ukraine and, as I recall, the larger value capacitor is the parallel one, not the series one. I could buy one of each and switch one at a time and have a spare left over. Any suggestions ? 73, Jamie WB4YDL Sent from my iPad _________________ Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband