TETRA (mod GMSK): Terrestrial Trunked Radio ou Trans-European Trunked Radio, a European standard for a trunked radio system, is a professional mobile radio and two-way transceiver specification.
TETRA was specifically designed for use by government agencies, emergency services, (police forces, fire departments, ambulance) for public safety networks, rail transport staff for train radios, transport services and the military.
TETRA is the European version of trunked radio, similar to Project 25.

380 – 400 MHz sauf France, Espagne, Suisse