[Elecraft] EFHW

[Brian Hunt]

The classic way to feed a EFHW is to use a tuned tank circuit. The top of it goes to the antenna and the bottom goes to a short counterpoise or the coax shield. You can either tap the coil X turns from the bottom to match 50 ohms or use a link coupling with the appropriate number of turns. 

I use such a system to match a tri-band EFHW on 20, 30, and 40.  Yes, each an electrical half wave using tapped loading coils. The link is 6 turns, tapped every turn. YMMV

73,
Brian, K0DTJ