FWIW, There are good instructions for a compressed air antenna launcher at http://www.qsl.net/k5lxp/projects/Launcher/Launcher.html
I've built one and had a lot of success with it. It can put a line over big trees (100'+ sugar pines and redwoods) quite easily. It was also fun a Field Day on a 500 acre farm with a bag of peaches I had to thin from my trees. You'd be amazed how high and far they go. If they are too ripe, however, they tend to splatter. Kids also liked it when we launched about a quart of water, which makes a nice spray for hot summer days. - Dave KQ6RL -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of J F Sent: Friday, September 10, 2004 4:46 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Line into trees <snip> Somewhere I've seen a design for a compressed air tennis ball line throwing "gun", which looks like it could be fun. <snip> _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com