Radio Amateur Quiz Canadian License

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Question A-007-007-009

The impedance at the centre of a dipole antenna more than 3 wavelengths above ground would be nearest to:

Correct Answer

75 ohms

Explanation

The free-space feedpoint impedance of a half-wave dipole is theoretically around 73 ohms. When very high above ground (many wavelengths), the ground's influence is minimal, and the impedance approaches this free-space value.

Warning: Generated by AI