Radiofrekvenser är indelade i olika områden.
3-30 KHz VLF (Very Low Frequency) 100Km-10Km Våglängd
| 30-300 | KHz LF (Low Frequency) | 10Km-1Km |
| 0.3-3 | MHz MF (Medium Frequency) | 1Km-100m |
| 3-30 | MHz HF (High Frequency) | 100m-10m |
30-300 MHz VHF (Very High Frequency) 10m-1m
300-3000 MHz UHF (Ultra High Frequency) 1m-0.1m
| 3-30GHz | SHF | (Super High Frequency) 1dm-1cm |
30-300GHz EHF (Extremely High Frequency) 1cm-0.1cm