On Wed, 27 Jun 2007, Richard Polivka, N6NKO wrote: > ANTENNA. You gain on both ends, RX and TX. Probably the best way to do > an antenna is to use a long rubber ducky antenna and use the metal frame > of a backpack as the ground plane. Plus, it is easier to carry day > supplies and the metal frame is far easier on the back than a softshell > pack.
Another possibility is to use very springy steel wire (probably stainless steel?) with a loop at the very end or a plastic bead melted onto it for eye protection. I'd probably go for a 1/2 wave dipole configuration, so you'd have about 19" up from the pack, then another 19" down through or alongside the pack, from the antenna connector. That'll work much better than any rubber duck I've ever seen. If you insist on a duck, go for the longest one you can find and then drop a 19" counterpoise down from the antenna connector as well to get a better pattern. > If you are going to go the radio/tnc route, I would set up the units to > also be digipeaters as well. This would give the low level signals a > better chance to propagate. I do not know if the D7A will digi as well, > so I would look into it. Nope. D7A(G) won't digi. -- Curt, WE7U. APRS Client Comparisons: http://www.eskimo.com/~archer "Lotto: A tax on people who are bad at math." -- unknown "Windows: Microsoft's tax on computer illiterates." -- WE7U "The world DOES revolve around me: I picked the coordinate system!" _______________________________________________ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
