The reason your antenna was a lot less finicky with a bit of coax is that the EFHW antenna requires a return path for the RF field. Theoretically, without a return path, the antenna won't radiate at all. The recommended setup for this antenna is for a .05 wavelength counterpoised to be used. EZNEC models indicate that there is little benefit to going much longer than .05 wavelengths, and a quarter wavelength is actually less effective than the shorter lengths. If no counterpoise is used, then coax shield becomes the counterpoise by default.
Bill N0CU -- View this message in context: http://elecraft.365791.n2.nabble.com/EFHW-tp7626554p7626577.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
