radiotelefonkommunikasjon
Radiotelefonko, or radiotelephone, is a system that enables two-way voice communication over radio waves, combining elements of telephony with wireless transmission. The term can refer to the device (a handheld or vehicle-mounted transceiver with a microphone and speaker) as well as the broader networked service that connects radio users to telephone networks or other radio users.
Overview: A radiotelephone system typically includes a transceiver, an audio interface, and a network infrastructure such
History: Early experiments in the 1900s led to the first commercial radiotelephony services for ships and trains.
Technology and modes: Radiotelephones can operate over terrestrial radio networks (VHF/UHF land-mobile radio, coastal and maritime
Usage and legacy: Today, radiotelephones remain in use for public safety, aviation, maritime, and remote-area communications,