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Approximately how long is each side of a cubical quad antenna driven element for 14.3 MHz?
5.36 metres (17.6 feet)
λ(m) = 300 / 14.3 ≈ 21.0 m. Side ≈ λ/4 = 21.0 / 4 ≈ 5.25 m. Side(ft) ≈ 251 / f(MHz) = 251 / 14.3 ≈ 17.55 ft.
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