On 9/10/05, Martin Gillen <[EMAIL PROTECTED]> wrote: > > I know that coax can be looped around 5 times to > create > a balun near the dipole feedpoint. Can twisted pair > be looped around to create a balun also?
Sure, a 1:1 choke balun can be made with twinlead as well as coax feedline. I've been having good results lately with a speaker wire doublet antenna cut for 30 meters, which my KX1 tunes up nicely on all 3 bands with a feedline length of 40'. I made 9 turns with the last 18" or so of the (twinlead speaker wire) feedline through a T140-43 ferrite toroid to create a 1:1 choke balun. A couple of nylon tie wraps bind the feedline to the toroid securely. A 4" pigtail was left over which I terminated with a cheap RS BNC connector for attachment to the KX1. No enclosure, no connectors, nice and simple, not as bulky as an airwound balun, but admittedly a bit heavier. Bob NW8L _______________________________________________ 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
