I’m not sure what the original post is actually suggesting, but there are three antennas techniques like that, and all have their uses.
A cage element connects everything together to make a fat, low-Q element. Those often have enough bandwidth to work over the entire 80m band. W1AW uses a cage dipole for 80m. A folded element is a bit shorter and has a higher impedance. It is also more broadband, mostly because of the fat elements, like a cage dipole. You can also use close-spaced parallel elements that are resonant at slightly different frequencies than the driven element. This is a different way to make a broadband antenna. This design has a name, but it escapes me right now. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Mar 1, 2017, at 9:46 AM, Jim Brown <[email protected]> wrote: > > On Wed,3/1/2017 5:25 AM, Charlie T, K3ICH wrote: >> Is there any truth in the theory of making the vertical radiator out of >> multiple wires such as ladder line and even adding a third wire woven >> through the ladder sections and fed on one wire? > > Nope. And that's not "theory," that's someone's dumb idea. :) > > BUT -- using multiple spaced conductors in parallel and connecting them at > both ends makes the conductor "thicker," which both lengthens it 1-2 percent > and broadens the SWR bandwidth. The same thing happens with a tower as > compared to a single wire. The vertical part of my 160M Tee vertical is a > pair of #12 spaced about 9 inches. When I added the second wire, I observed > that my SWR bandwidth approximately doubled. > > 73, Jim K9YC > > > ______________________________________________________________ > 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]
