Useful summary of frequencies, wavelengths and bands as they are named and used.
| Frequency | IEEE
band |
European Union
designation |
ITU
number |
ITU
abbreviation |
| 3 Hz | A | |||
| 30 Hz | 1 | ELF | ||
| 300 Hz | 2 | SLF | ||
| 3 kHz | 3 | ULF | ||
| 30 kHz | 4 | VLF | ||
| 300 kHz | 5 | LF | ||
| 3 MHz | 6 | MF | ||
| 30 MHz | HF | 7 | HF | |
| 250 MHz | VHF | 8 | VHF | |
| 300 MHz | B | |||
| 500 MHz | UHF | 9 | UHF | |
| 1 GHz | C | |||
| 2 GHz | L | D | ||
| 3 GHz | S | E | ||
| 4 GHz | F | 10 | SHF | |
| 6 GHz | C | G | ||
| 8 GHz | H | |||
| 10 GHz | X | I | ||
| 12 GHz | J | |||
| 18 GHz | Ku | |||
| 20 GHz | K | |||
| 27 GHz | K | |||
| 30 GHz | Ka | |||
| 40 GHz | 11 | EHF | ||
| 60 GHz | V | L | ||
| 75 GHz | M | |||
| 100 GHz | W | |||
| 110 GHz | ||||
| 300 GHz | mm | |||
| 3 THz | 12 | THF |
Explanation to shortcuts in the table above:
ELF – extremely low frequency
SLF – super low frequency
ULF – ultra low frequency
VLF – very low frequency
LF – low frequency
MF – medium frequency
HF – high frequency
VHF – very high frequency
UHF – ultra high frequency
SHF – super high frequency
EHF – extremely high frequency
THF – tremendously high frequency
Shortcuts of the organizations:
IEEE: Institute of Electrical and Electronics Engineers
ITU: International Telecommunication Union
sources:
521-2002 – IEEE Standard Letter Designations for Radar-Frequency Bands, Wikipedia, my own sources
Planetary Science Blog 