Motorola ASTRO XTL 2500 User Manual page 143

RF
RSSI
Squelch
Standby
Talkgroup
TMS
Tone Private-Line
(PL) Coded
Squelch
Trunking
Zone
ASTRO XTL 2500 Digital Mobile Radio with M5 Control Head
Radio Frequency. A part of the general
frequency spectrum between the audio and
infrared light regions (about 10 kHz to
10,000,000 MHz).
Received Signal Strength Indicator.
The muting of audio circuits when received
signal levels fall below a pre-determined
threshold. With carrier squelch, you hear all
channel activity which exceeds the radio's
preset squelch level.
An operating condition whereby the radio's
speaker is muted but still continues to receive
data.
An organization (or group) of radio users who
communicate with each other, using the same
communication path.
Text Messaging Service.
A continuous sub-audible tone transmitted with
the carrier.
The automatic sharing of communications
paths between a large number of users (see
Conventional). Allows radio users to share a
smaller number of frequencies because a
repeater, or communications path, is assigned
to a talkgroup for the length of a conversation.
A grouping of channels or talkgroups.
Glossary
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