Well-said, Don. 73!
Ken Kopp - K0PP On Thu, Oct 10, 2019, 16:23 Don Wilhelm <[email protected]> wrote: > All this talk of multi-band antennas for Field Day ignores the problem > of multi-station Field Day operation. > There is sufficient pickup of one transmitter's energy on the antenna > being used by a receiver on another band. > For that reason, my club has banned the use of multiband antennas for > Field Day operation. > > For a single station Field Day operation, the multiband antennas are great. > > 73, > Don W3FPR > > On 10/10/2019 5:32 PM, David Lee / Seatools wrote: > > On Thu, Oct 10, 2019 at 2:06 PM Fred Jensen <[email protected]> wrote: > > > >> Yes, however ... a center-fed dipole long enough to be moderately close > >> to a half-wave at 40 will develop a serious case of acute lobe-itis when > >> operated at higher frequencies, squirting your RF in a variety of > >> directions, many of which may not be productive for your intended > >> objective. Try, as many have over the years, to design the "magic > >> antenna" that is very small, provides a 1:1 match on all bands, easily > >> installed, and exhibits good gain, your effort will inevitably fail. As > >> JC Maxwell is reported to have said, "Physics is physics, the rules are > >> unbreakable." A log-periodic will give very modest gain over an octave > >> or more, however LP's hardly fall into the Field Antenna class. [:-) > >> > >> 73, > >> Fred ["Skip"] K6DGW > >> Sparks NV DM09dn > >> Washoe County > >> > >> On 10/10/2019 1:24 PM, Al Lorona wrote: > >>> My experience with single vertical or sloping wires is exactly the same > >> as AB7E's. I have, over almost twice as many Field Days as Dave, come > to a > >> similar conclusion, with the slight difference being my preference for > an > >> "all-band dipole" fed with balanced line. This obviates the balun and > >> reduces feedline loss to negligible, so obviously I am maximizing > >> efficiency at the expense of any other possible advantage. (I can > usually > >> hear much better than I can be heard... so thus far this has been a > valid > >> decision.) > >>> > >>> To sum up what I and what I think Dave are saying, you can't beat a > >> horizontal, center-fed wire up as high as you can get it. Its > simplicity, > >> the flexibility it gives you to QSY (with a good tuner), and its high > >> efficiency are almost unbeatable. > ______________________________________________________________ > 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] > ______________________________________________________________ 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]
