The W8JK antenna design

Invented by Dr. John D. Kraus, W8JK, in 1937, it uses two dipoles, both driven and out of phase with each other, to create a directional antenna no front to back ratio, though that works on six bands 20-17-15-12-10-6 meters and as a top loaded vertical on 40 meters
post 14 May 2024
The W8JK antenna design

Wire & Random Antenna Links


An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 30, 40, and 80 Meters
A coaxial-cable trap dipole antenna installed in the attic provides a surprisingly effective solution to HF

Antenna dipolo
Il dipolo aperto e' l'antenna piu' semplice, la piu' economica, la piu' facile da costruire

Antenne per il radioascolto
Non sono considerate antenne, nel sensostretto del termine, i pezzi di filo


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Rx antennas 4Square Rx Vertical Array

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A simple SWR Meter is to be used at HF

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