Wow. Even I was amazed with this one! Remarkable antenna – works great on all bands (40, 20, 15 & 10). Ideal 2nd antenna solution for 2 x VFO dual-watch type radios or addition for Hexbeams and Yagis. Great first-build home-brew project too. Delivers better than 1.5:1 SWR with 4:1 balun. This one is also extremely low to ground. Quite amazing.
https://youtu.be/H9UUfEoiRvw Making the Delta Loop
https://youtu.be/CZf-dwWIUDo How to Make a 4:1 Balun with Mike and Callum