Interestingly enough, I played around with modeling that very thing in EZNEC+ a few weeks ago. I wasn't able to get it to work worth a damn without more wires both in the top section and the skirt. I'm not saying it can't be done, but the modeling I did wasn't very encouraging. If anyone has had more favorable experience, whether model or actual, I'd be willing to give it another try.
Dave AB7E On 12/7/2018 3:29 PM, Charlie T wrote:
I wonder if anyone has ever tried, for want of a better name, a "Skeleton Cone" which consists of a single horizontal wire connected to the coax center conductor and two sloping wires at 45 degrees, in the same plane connected to the coax shield. A true Discone antenna would have many (typically eight each) horizontal and sloping elements. I'm guessing many of us have used the VHF/UHF version for very wide band coverage, for example 144, 220, 432 MHz and even higher. I know I have one up and it performs as well as a regular single band ¼λ ground plane (unity gain) on all three bands with low SWR. The ICOM version as well as a few others, also have a loaded whip for 52 MHz mounted on the bushing that the horizontal elements are screwed into. I'm also guessing the formulas for a true Discone would work for a "skeleton" style as well. I Since it is inherently a wide band design, the actual lengths are probably not too critical. I've heard this type antenna described, but I don't remember where or how well it supposedly worked. It obviously requires two supports, high enough that the sloping wires ends are off the ground by a bit. 73, Charlie k3ICH
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