ORIGINAL MESSAGE: On Fri, 01 Dec 2006 10:36:38 -0800, Jim Lux <jimlux at earthlink.net> wrote: >(the free >air distance from center pin to shell is probably about 0.15 inches * >70kV/inch = 10.5 kV.. ------------ REPLY FOLLOWS ------------ Where did the figure of 70 KV/inch come from? My experience and training says closer to 30 KV/inch. Bill, W6WRT