Any digital P25 traffic having the correct
Network Access Code and the correct
Special electronic circuitry, added to the
receiver of a radio, that reduces, or cuts off,
unwanted signals before they are heard in
An operating condition whereby the radio's
speaker is muted but still continues to
Pre-defined text messages that allow the
user to send a conditional message without
The user talks on the channel that was
selected before the radio entered the
Bypass a repeater and talk directly to
another unit for easy local unit-to-unit
An organization or group of radio users
who communicate with each other using
the same communication path.
Text Messaging Service
The automatic sharing of communications
paths between a large number of users
A scan list that includes talkgroups that are
all from the same trunking system.
Unique Shadow Key
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.
A grouping of channels.