Multiple choice technology

What frequency range is the High Frequency band?

  1. 100 kHz

  2. 1 GHz

  3. 30 to 300 MHz

  4. 3 to 30 MHz

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

High Frequency (HF) band is the ITU designation for 3 to 30 MHz radio frequencies. This band is used for shortwave radio broadcasting, amateur radio, and various communications services. The other options are incorrect: 100 kHz would be in the LF band, 1 GHz is in the UHF band, and 30-300 MHz is the VHF band.