Frequencies
| Frequency | Wavelength | Designation | Abbreviation |
|---|---|---|---|
| 3 – 30 Hz | 104 – 105 km | Extremely low frequency | ELF |
| 30 – 300 Hz | 103 – 104 km | Super low frequency | SLF |
| 300 – 3000 Hz | 100 – 103 km | Ultra low frequency | ULF |
| 3 – 30 kHz | 10 – 100 km | Very low frequency | VLF |
| 30 – 300 kHz | 1 – 10 km | Low frequency | LF |
| 300 kHz – 3 MHz | 100 m – 1 km | Medium frequency | MF |
| 3 – 30 MHz | 10 – 100 m | High frequency | HF |
| 30 – 300 MHz | 1 – 10 m | Very high frequency | VHF |
| 300 MHz – 3 GHz | 10 cm – 1 m | Ultra high frequency | UHF |
| 3 – 30 GHz | 1 – 10 cm | Super high frequency | SHF |
| 30 – 300 GHz | 1 mm – 1 cm | Extremely high frequency | EHF |
| 300 GHz - 3000 GHz | 0.1 mm - 1 mm | Tremendously high frequency | THF |
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