In this video, I make a 40m delta loop out of Kevlar cored copper braid antenna wire, with strain relief and I attach the 4:1 balun that Mike and I made last year. Enjoy. Callum.
Here’s the article I found: https://practicalantennas.com/designs/loops/loop-sizes/
The 4:1 Balun with Mike https://youtu.be/CZf-dwWIUDo