Easy Ham Radio Sky Loop Antennas - The Mega Loop

Years ago, we ran a huge triangular loop at the Scout Hut in Dorridge. This was fed with coax and a 4:1 balun to bring impedance to near 50 ohms. I discuss the problem in matching the harmonics related to 80m and 40m and also the slightly higher SWR on 160m due to the loop (in percentage terms) being low to the ground. All the other bands were fine.

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