Topband: Gamma matching crank-up tower
Thu, 24 Oct 2002 13:59:41 -0400
I have the same tower here. Force 12 C-3ss at 90' and a 2 el short boom
inductor loaded 80m\40m Yagi at 100'.
I drop the shut wire from the top of the third section up from the bottom.
(I just hose-clamped a 3.5' piece of 1" aluminum tubing to the rungs). A
large air variable from an old HF amplifier as the gamma cap has had no
arcing problems at a KW.
1:1 match at 1835 with good bandwidth.
gl, de steve VE6WZ http://www.qsl.net/ve6wz/index.html