Radio Amateur Quiz Canadian License

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Question A-007-007-004

Why is a ground-mounted vertical quarter-wave antenna in reasonably open surroundings better for long distance contacts than a half-wave dipole at a quarter wavelength above ground?

Correct Answer

The vertical radiation angle is lower

Explanation

A quarter-wave vertical over good ground typically has a lower angle of radiation compared to a horizontal dipole placed only a quarter-wavelength high. Lower takeoff angles are generally better for long-distance (DX) ionospheric propagation.

Warning: Generated by AI