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Which 70 cm frequency is authorized to a Technician Class license holder operating in ITU Region 2?
443.350 MHz

Exposition

A person could either memorize that the 70 cm band runs from 420 MHz to 450 MHz, or a person could convert the wavelength to a frequency and pick the closest answer.

\lambda=\frac{c}{v} or \text{wavelength}=\frac{\text{speed of light}}{\text{frequency}}
\lambda*v=c
v=\frac{c}{\lambda}
v=\frac{3*10^8}{70cm}
v=\frac{300,000,000}{.70}
v=428,571,428.571

443.350 MHz is the closest given answer.

See alsoEdit

wavelength frequency conversion.

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