Motorola APX 6000 User Manual page 139

Term
The part of the general frequency spectrum
Radio
between the audio and infrared light
Frequency (RF)
regions (about 10 kHz to 10,000,000 MHz).
A conventional radio feature, where you
talk through a receive/transmit facility that
Repeater re-transmits received signals, in order to
improve communications range and
coverage.
A feature that allows you to call a select
individual, intended to provide privacy and
Selective Call
to eliminate the annoyance of having to
listen to conversations of no interest to you.
Any digital P25 traffic having the correct
Selective Switch Network Access Code and the correct
talkgroup.
Special electronic circuitry, added to the
receiver of a radio, that reduces, or cuts off,
Squelch
unwanted signals before they are heard in
the speaker.
SSI Synchronous Serial Interface
An operating condition whereby the radio's
Standby speaker is muted but still continues to
receive data.
Definition Term
Pre-defined text messages that allow the
Status Calls user to send a conditional message without
talking.
The user talks on the channel that was
Tactical/
selected before the radio entered the
Non-Revert
emergency state.
Bypass a repeater and talk directly to
Talkaround another unit for easy local unit-to-unit
communications.
An organization or group of radio users
Talkgroup who communicate with each other using
the same communication path.
TMS Text Messaging Service
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.
Definition
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