antennas

The Tri-Vertical

KENT BRITAIN, MICHAEL TOIA

A Three-Band Vertical Beam for 80, 40 and 20 Meters WA5VJB was up to his ears in work for his day job this month, so we asked frequent contributor Michael Toia, K3MT, to step in as Guest Editor for this issue. He shares a design for a 3-element triband vertical beam.–W2VU In the late 1970s, a three-element, 80-40-20-meter vertical beam graced my property. It worked wonderful DX until I changed QTH and tore it down. Now, at age 85, I recapture from memory its essential details that may guide one to rebuilding it, as my ability to do so by field work has long since faded. Figure 1 is an isometric 3-D sketch of the antenna, three verticals with a radial field used for NEC code modeling. The verticals are…

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CQ Amateur Radio (Digital) - 1 Issue, June 2023

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