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The radio frequency spectrum is divided into various bands. What is the range of frequencies that corresponds to the High Frequency (HF) band?

  • A

    30 MHz to 300 MHz

  • B

    3 MHz to 30 MHz

  • C

    300 MHz to 3000 MHz

  • D

    300 kHz to 3000 kHz

The radio frequency spectrum is divided into bands. The table below introduces the frequency bands:

Frequency band Frequencies Wave band Wave length
VLF Very Low Frequency 3-30 kHz Very long 100-10 km
LF Low Frequency 30-300 kHz Long 10-1 km
MF Medium Frequency 300-3000 kHz Medium 1 km-100 m
HF High Frequency 3-30 MHz Short 100-10 m
VHF Very High Frequency 30-300 MHz Short 10-1 m
UHF Ultra High Frequency 300-3000 MHz Ultra short 1 m-10 cm
SHF Super High Frequency 3-30 GHz (3000-30 000 MHz) Super short 10-1 cm
EHF Extremely High Frequency 30-300 GHz Extremely short 1 cm-1 mm

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