2.1 The radio spectrum shall be subdivided into nine frequency bands, which shall be designated by progressive whole numbers in accordance with the following table."
These bands are:
| Band Number | Symbols | Frequency Range |
|---|---|---|
| 4 | VLF | 3 to 30 kHz |
| 5 | LF | 30 to 300 kHz |
| 6 | MF | 300 to 3000 kHz |
| 7 | HF | 3 to 30 MHz |
| 8 | VHF | 30 to 300 MHz |
| 9 | UHF | 300 to 3000 MHz |
| 10 | SHF | 3 to 30 GHz |
| 11 | EHF | 30 to 300 GHz |
| 12 | 300 to 3000 GHz |