Few antennas in amateur radio stir up as much debate as the end-fed antenna. Mention one at a club meeting, and you will immediately hear wildly different opinions. One ham will praise it as the greatest invention since coaxial cable. Another will claim it turns every appliance in the house into a touch lamp. A third will mutter, “common-mode current,” shake their head, and walk away.

The truth, as usual in ham radio, lies somewhere between engineering and sorcery.

End-fed antennas…

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