Back Frequency Classifications

Frequency Classifications

Frequency Band Number Classification Abbreviation Applications
3 Hz - 30 Hz 1 Extremely low frequencies ELF Submarine communications
30 Hz - 300 Hz 2 Super low frequencies ELF Submarine communications
300 Hz - 3 kHz 3 Ultralow frequencies ULF Submarine communications; mine communications
3 kHz - 30 KHz 4 Very low frequencies VLF Navigation; time signals
30 kHz - 300 KHz 5 Low frequencies LF Navigation; time signals; RFID
300 kHz - 3 MHz 6 Medium frequencies MF AM radio; amateur radio
3 MHz - 30 MHz 7 High frequencies HF Aviation communications; shortwave; marine telephony; amateur radio
30 MHz - 300 MHz 8 Very high frequencies VHF FM radio; weather radio; TV broadcasts; aviation communications; amateur radio
300 MHz - 3 GHz 9 Ultrahigh frequencies UHF TV broadcasts; mobile phones; two-way radio; amateur radio
3 GHz - 30 GHz 10 Super high frequencies SHF Microwave communications; radar; communications satellites; amateur radio
30 GHz - 300 GHz 11 Extremely high frequencies EHF Radio astronomy; amateur radio
300 GHz - 3 THz 12 Tremendously high frequencies THF Amateur radio