Actually Dave, a full wavelength wire will have a " 4 leaf clover" pattern - that is neither broadside to the antenna, nor off the ends. Check out the pattern for a 1 wavelength long wire in the ARRL Antenna Book. The maximum radiation is about 28 degrees from the wire - the radiation from the end is almost zero.
The elevation angle of maximum radiation is similar to a half wave dipole - about 15 degrees with a lesser lobe at 45 degrees (that is for a wire 70 feet high, at lower heights, the angle will be greater). 73, Don W3FPR On 8/24/2011 5:34 PM, David Gilbert wrote: > > I'm not sure I see the advantage. A full wave end fed antenna would > theoretically have the same very high feedpoint impedance, and would > additionally blow most of it's radiated energy at a fairly high angle > off the ends of the antenna instead of broadside at a lower angle. If > you find it that easy to tune, I suspect that electrically it really > isn't that close to a full wavelength ... possibly because of coupling > to earth (if it is low) or nearby structures. Either that or there is a > lot of loss in the system somewhere. > > 73, > Dave AB7E > ______________________________________________________________ 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
