For Fred's antenna need: I would investigate the Force 12 vertical antennas. I have used several of the Sigma 5 model, (20 to 10) on science projects and they are durable, easy to set up and take down, and work with high efficiency, equal or better to, a dipole of full size. They are bar loaded, with center matching coils and remote switching for the high bands in model Sigma 5. There are also 40 meter capable models. They are true vertical loaded dipoles, thus requiring NO auxiliary ground wires, radials, or counterpoises. They are coax fed,with bead chokes on the coax so that bringing off the coax from the center is not a problem.
See the Force 12 web site for the DX contest performance of Sigma verticals. They were also written up in the ham magazines with favorable results. -Stuart K5KVH _______________________________________________ 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
