This design is from Hans - PE1RNU
I used a FT 240-43 for much more power, not needed but beter safe than sorry.
150 Watt continious, 300 Watt PEP SSB, 90 Watt Digimodes
10 Mhz, 18 Mhz, 24 Mhz
Very easy to build design and a good antenna for people who don't have much space for big towers or long wires
The heart of the multiband (you could as well call it “anyband”) end-fed is a 1:50 (to 1:60) impedance transformer that feeds half a wave of wire fed at the end (or beginning) where impedance is (very) high (around 3k Ohms). You could consider the end-fed an half wave “off center fed” dipole that’s fed VERY off center, like a Windom taken to the extreme: total length half a wave divided over one very long leg and one very short leg. The short leg is so short, that we actually leave it out. Just like a windom, it doesn’t require any radials.
The first 2 windings (between A & B) need to be loosely twisted, but when wound on the core tight to eachother.
After the first windings you have to wind 7 windings also tight to eachother and tight next to the first 2 windings.
The last 7 windings must have some separation.
I bought a complete Kit, so no hassle scraping parts together, the seller will ship abroad as wel.
https://www.communicationworld.nl/endfed-bouwpakket-warc-banden.html?search=end%20fed%20warc
Pictures of the kit and building proces
I like to wind very loose as I had a shortcut before between the coilwire and the ferrite.
