Dick, I ran some simulations. There is very heavy coupling to the tower. That's not such a bad thing. The tower current is 180 out-of-phase with the inverted-L current. The GND return current is the
Eric, here is a link to a review of a device made for this. They say it will shot a tennis ball 300 feet. It's $119. http://www.eham.net/reviews/detail/5199 There is also a slingshot/fishing reel dev
Ed, here are some dimensions derived using EZNEC: Height 90', 4" diameter four #14 top hat wires 20' Base coil 5 uH (make coil 10 uH and tap it) Radiation resistance 22 ohms This article by K3LC will
Ed, Let's compare the 90' top loaded vertical against a 90 foot vertical without top loading wires. Mechanically it might be nice to not have the top loading wires. In that case the radiation resista
Picture 5 shows the generator connected to the coax inner conductors It should be connected to the coax shields. Dave WX7G _______________________________________________ ____________________________