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Radio Frequency
(RF)
Repeater
Selective Switch
Squelch
Standby
Tactical/Non-revert
Talkaround
Talkgroup
TMS
Trunking
Zone
ASTRO XTS 2500/XTS 2500
The part of the general frequency spectrum
between the audio and infrared light regions
(about 10 kHz to10,000,000 MHz).
A conventional radio feature, where you talk
through a receive/transmit facility (repeater),
that re-transmits received signals in order to
improve communications range and
coverage.
Any digital P25 traffic having the correct
Network Access Code and the correct
talkgroup.
Special electronic circuitry added to the
receiver of a radio which reduces, or
squelches, unwanted signals before they are
heard in the speaker.
An operating condition whereby the radio's
speaker is muted but still continues to receive
data.
The user will talk on the channel that was
selected before the radio entered the
emergency state.
Bypass a repeater and talk directly to another
unit for easy local unit-to-unit
communications.
An organization of radio users who
communicate with each other.
Text Messaging Service.
The automatic sharing of communications
paths between a large number of users. (See
Conventional.)
A grouping of channels.
I
Model III
Glossary
127
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