The QRPer Board

https://k7mem.com/Ant_End_Fed.html#Not_Random_Multi Andrew do you actually have experience with a 29 ft end fed antenna? I do, and it works pretty well on 40-10 with a 9:1 transformer. no, didn't try it; but the fact that it's shorter than 1/4 wave on 40 raises some doubt about its radiation effici...

Andrew (grayhat) wrote: ↑Sat Mar 22, 2025 4:56 pm https://k7mem.com/Ant_End_Fed.html#Not_Random_Multi

Andrew do you actually have experience with a 29 ft end fed antenna? I do, and it works pretty well on 40-10 with a 9:1 transformer.

Andrew (grayhat) wrote: ↑Sat Mar 22, 2025 11:26 am being able to "load" or "tune" if you prefer does not mean efficient radiation a dummy load will "tune" just fine

Whenever I use mine it works fine. Certainly not a dummy load.

Just wanted to introduce myself.

AA5ET, Marco in Albuquerque in the Land of Enchantment, and glad to be here.

For more info you can look up my call on QRZ.

I built and tested an EFRW / 9:1 Unun antenna with 29.5 ft (9m) radiator and single 17 ft (5.2m) counterpoise. With Elecraft KX2 internal tuner, I can reliably tune 60m to 10m bands. I am using it for QRP CW field (POTA) operations, and have had a respectable number of contacts. Deploying it is ver...