Radio Amateur Quiz Canadian License

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Question B-006-012-001

If you made a half-wavelength dipole antenna for 28.150 MHz, approximately how long would it be?

Correct Answer

5.08 metres (16.62 ft)

Explanation

L(m) ≈ 142.5 / f(MHz) (using a common factor accounting for end effect). L ≈ 142.5 / 28.150 ≈ 5.06 m. L(ft) ≈ 468 / f(MHz) = 468 / 28.150 ≈ 16.62 ft.

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