The next Funktelegramm, April 2018, features a 6 page article about my new EGA30 antenna. An end-fed antenna for 30/17/12m (WARC) with an overal length of 6,6m.
Main focus is the background of end-fed antenna design: how to calculate and solve the math for a cascaded end-fed antenna.
The article is for DIY hobbyists and there are also specific build instructions (value of the coils, length of all antenna segments, etcetera …) to build your own version:
• V.S.W.R: 30m: between 1:1,1 and 1:1,3
• V.S.W.R: 17m: between 1:1,2 and 1:1,7
• V.S.W.R: 12m: ≤1:1,1
But you can also tackle the math and calculate your own version with other bands …
73 de Joerg DJ4WD
PS: If someone is all thumbs, this antenna is also available in my shop www.dj4wd.de …