ftgJun 23, 2025
@mxshift @dysfun
Thank you for the picture.
Unfortunate that the main element does not open.
As everybody seems to just call it "Dorne-Margolin antenna element" or "a Dorne & Margolin C146-10 vertical dipole element".
And Dorne & Margolin seems to be some company.
Show threadJustin K5EMJun 24, 2025
@ftg @mxshift @dysfun https://sites.calian.com/app/uploads/sites/8/2023/11/Tallysman-Intergeo-2020.pdf
Show threadftgJun 24, 2025
@k5em @mxshift @dysfun
Nice find, thanks.
So that Dorne Margolin setup is 4x phased, tilted dipoles?
Show threadJustin K5EMJun 24, 2025
@ftg @mxshift @dysfun that is what the schematic seems to say, but I'm actually not completely sure now, after a lot more research. Everyone regurgitates the same schematic image, but the best image I've found of it is this one from https://carleton.scholaris.ca/bitstreams/52972888-15b0-48e4-a962-c3af09b38cc2/download
Show threadftg
@k5em @mxshift @dysfun
Strange that there are also no references to patents and patent numbers.
Jun 24, 2025 at 11:25pmWeb
Show threadJustin K5EMJun 24, 2025
@ftg @mxshift @dysfun agree. There's the original Alford loop patent, but it doesn't really reflect what seems to be going on here, even though the D&M is called a modified Alford loop. https://patents.google.com/patent/US2283897A/
US2283897A - Antenna system - Google Patents