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Antenna length calculator

Dipole and vertical lengths for a frequency.

Antenna length calculator

Dipole and vertical lengths for a frequency.

0.975 m (38.4 in)
Half-wave dipole, total
0.488 m (19.2 in)
Each leg of the dipole
0.488 m (19.2 in)
Quarter-wave vertical
2.053 m
Full wavelength in free space

Cut a little long and trim while watching the SWR: end effects and nearby objects shift the resonance.

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