SM0HRP, Two years ago I built a 2 element 40 meter yagi. I tried to use a DXE hairpin, but could not effect a match. After consulting with DXE tech staff I abandoned it, as the device they sell did n
My Optibeam OB2-40 two element coil loaded shorty 40 uses the exact same thing for a match ... a small coil at the feedpoint wound with aluminum tubing ... and as you say, it works great. I had measu