Radio Amateur Quiz Canadian License

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Question A-007-008-009

Antenna beamwidth is the angular distance between:

Correct Answer

the points on the major lobe at the half-power points

Explanation

The beamwidth, specifically the Half-Power Beamwidth (HPBW), is the angle between two directions in the antenna's main radiation lobe where the radiated power is half of the maximum power (i.e., -3 dB down from the peak).

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