102 feet. There is nothing magic about 102 feet if you feed it with open-wire line. Having a decent match at the feed point doesn't mean squat because feed-point impedance is transformed by the feed line and what you get at the transmitter end won't be the same as at the feed point unless feed-line length is an even multiple of a half wavelength.
What IS important is the total length of one half of your dipole plus your open-wire feed. For whatever frequency/frequencies you want an easy match on, make half of your dipole plus feed length as close to an odd multiple of a quarter wavelength as you can. This can be problematic if you want to operate on multiple bands. Don't despair--it's not that hard. You can adjust flat-top length or feed-line length or both to get something you can match on all your bands of interest. Bottom line. Your ability to match is affected by both dipole length and (open-wire) feed-line length. 73, Hank, W6SX ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
