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68012002065-HW
Glossary
An organization or group of radio users who communicate with each other using the same
communications path.
TMS
Text Messaging Service.
Trunking
The automatic sharing of communications paths between a large number of users. Allows
users to share a smaller number of frequencies because a repeater or communications path
is assigned to a talkgroup for the duration of a conversation.
Trunking Priority Monitor scan list
A scan list that includes talkgroups that are all from the same trunking system.
USK
Unique shadow key.
UTC
Coordinated Universal Time. The international time standard (formerly Greenwich Mean Time,
or GMT). Zero hours UTC is midnight in Greenwich, England, which is located at 0 degrees
longitude. Everything east of Greenwich (up to 180 degrees) is later in time; everything west
is earlier. There are 42 time authorities around the world that are constantly synchronizing with
each other. Abbreviated as UTC (English backronym = Universal Time, Coordinated), it is also
known as Zulu (Z) Time.
VRS
Vehicular Repeater System.
Zone
A grouping of channels.
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