And then there is this: https://en.wikipedia.org/wiki/Umbrella_antenna#/media/File:Main_antenna_feed_Anthorn.jpg
If you had one of these in your backyard, I am sure the entire state would decide it was causing TVI. 19.6 khz. Jim 'VEZ On Thu, Apr 7, 2022 at 8:19 PM Grant Saviers <[email protected]> wrote: > I think the disc-cone is a close relative. There is one of these on the > bow of the Iowa BB in Long Beach. During a tour by W6HB, I was told > they would have 25+ full duplex TTY circuits open at one time on this > and 4 whip antennas mounted on the superstructure. > > Another piece of battleship antenna trivia is how they patterned > antennas without any of the computer techniques now available. They > made about an 8ft long fully detailed model in brass and excited > antennas under test at UHF+. > > Grant KZ1W > > On 4/7/2022 09:44, Kenneth Grimm wrote: > > The first time I saw one it was called the Folded Umbrella and was > > popularized by the late WB5IIR, John Haerle. He wrote an article for HR > in > > May of 1979. He also described it in his book, "The Easy Way." I've > been > > using my own version of the basic design on 160 for several years. > > 73, > > Ken - K4XL > > > > On Thu, Apr 7, 2022 at 12:24 PM Mark - N5OT <[email protected]> wrote: > > > >> Conical Monopole > >> > >> Say that fast 3 times: > >> > >> Conical Monopole > >> Conical Monopole > >> Conical Monopole > >> > >> Right. The first time I saw one, it was called a Folded Unipole. My 160 > >> support can be probably 80' or 24 meters. I have considered my options > >> for broad-banding it for 160. This is one of the choices. > >> > >> Mark N5OT > >> _________________ > >> Searchable Archives: http://www.contesting.com/_topband - Topband > >> Reflector > >> > > > > > _________________ > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector > _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
