The radio frequency spectrum is divided into bands. The table below introduces the frequency bands:
| Frequency band | Frequencies | Wave band | Wave length | |
| VLF |
Very Low Frequency | 3-30 kHz | Very long | 100-10 km |
| LF | Low Frequency | 30-300 kHz | Long | 10-1 km |
| MF | Medium Frequency | 300-3000 kHz | Medium | 1 km-100 m |
| HF | High Frequency | 3-30 MHz | Short | 100-10 m |
| VHF | Very High Frequency | 30-300 MHz | Short | 10-1 m |
| UHF | Ultra High Frequency | 300-3000 MHz | Ultra short | 1 m-10 cm |
| SHF | Super High Frequency | 3-30 GHz (3000-30000 MHz) | Super short | 10-1 cm |
| EHF | Extremely High Frequency | 30-300 GHz | Extremely short | 1 cm-1 mm |
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