Question

What frequency range is the High Frequency band?

100 kHz
1 GHz
30 to 300 MHz
3 to 30 MHz​

Answer 1

3 to 30 MHz

Because high frequency range is an ITU designation for the range if radio frequency

Answer 2

Answer:

High-frequency (HF) radio is in the 100- to 10-metre wavelength band, extending from 3 megahertz to 30 megahertz.