Motorola ASTRO APX 6000 Series Quick Reference Card page 71

Term
An organization or group of radio users
Talkgroup who communicate with each other using
the same communication path.
The automatic sharing of communications
Trunking paths between a large number of users
(see Conventional).
Trunking
A scan list that includes talkgroups that are
Priority Monitor
all from the same trunking system.
Scan List
USK Unique Shadow Key.
Zone A grouping of channels.
Definition
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English