Conventional radio
Encyclopedia
In radio communication, a conventional radio is generally understood as being a system in which each group of talkers is assigned one frequency. This is usually contrasted to a trunked radio system
Trunked radio system
A trunked radio system is a complex type of computer-controlled radio system. Trunked systems use a few channels , and can have virtually unlimited talkgroups. The control channel computer sends packets of data to enable one talkgroup to talk together, regardless of frequency...

, where talkgroups share a given group of frequencies.
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