Tipologie di onde trasmissioni radio bandafrequenzelunghezza d onda ELF3 – 30 Hz 100 000 km – 10 000 km SLF30 – 300 Hz 10 000 km – 1000 km ULF 300 – 3000 Hz 1000 km – 100 km VLF3 – 30 kHz100 km – 10 km LF 30 – 300 kHz 10 km – 1 km MF 300 – 3000 kHz 1 km – 100 m HF3 – 30 MHz100 m – 10 m VHF 30 – 300 MHz 10 m – 1 m UHF 300 – 3000 MHz 1 m – 10 cm SHF3 – 30 GHz10 cm – 1 cm EHF 30 – 300 GHz 1 cm – 1 mm