Ron D'Eau Claire wrote on 06/09/05 21:57 ET: > A balun will probably work > okay, but they become unpredictable when the SWR on the line is high, as it > will be in your antenna.
I use a classic Zepp and found this out first hand! A 4:1 balun might not give a true 4:1 change in that case or could show losses. In the other extreme, sometimes the impedance can go low to begin with on a multiband wire and a 4:1 makes it too low to match. > Sometimes people actually get out better simply > hooking one side of the open wire feeder to the K2 case and the other to the > center pin on the output of the ATU. That produces a large degree of > imbalance in the feeders, so they'll radiate. That can actually be a help if > your feeders are out in the clear and pretty much vertical. If your feeders aren't out in the clear, a 1:1 balun like the w2du type with ferrite beads does a much better job of suppressing common mode currents in the shack. Of course, you might lose the ability to tune 80m without the 4:1 and then have to play with feedline length. I like your line Ron: > Nothing is as much "black magic" in his Hobby as antennas! 73, Mike AB3AP _______________________________________________ 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
