On Mon, 19 Feb 2007 17:54:25 -0500, Don Wilhelm wrote: >3 bands is about my limit.
Yes -- beyond that, they get both electrically and mechanically unwieldy. >One other point - do not try to combind bands that are close to the 3rd >harmonic of the lower one on the same coax - that too will drive you crazy >trying to tune them because the 3rd harminic frequency antenna will also >present a low impedance feedpoint. In other words, stay away from combining >80 and 30 meters or 40 meter and 15 meters. This is also very good advice. W2DU has an excellent discussion of this on his website. Google to find it. It's in one of the chapters of his book. >I successfully use an 80/40 meter combination, a 20/15/10 combination Agreed. I also have an 80/40 fan that has loading coils at the ends of the 80 meter element to allow it load on 160 (and, of course, the 40 meter element works fine on 15. That antenna also works quite well (and it's a 4-band antenna!). The loading coils are from HyPower Antenna Co. Google to find them -- they're a good solution for antennas on small lots. I also have a 40/30/20 that works, but is not as well behaved as the harmonically related ones, for the reasons noted. 73, Jim Brown K9YC _______________________________________________ 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
