User's Manual

Glossary
English
54
Non-Tactical/
Revert
The user talks on a preprogrammed
emergency channel. The emergency alarm
is sent out on this same channel.
OTAR Over-the-air rekeying.
Page
A one-way alert, with audio and/or display
messages.
Personality A set of unique features specific to a radio.
Preprogrammed
Refers to a software feature that has been
activated by a qualified radio technician.
Private Line
(PL)
A sub-audible tone that is transmitted such
that only receivers decoding the tone
receives it.
Programmable
Refers to a radio control that can have a
radio feature assigned to it.
PTT
Push-To-Talk – the PTT button engages
the transmitter and puts the radio in
transmit (send) operation when pressed.
Radio
Frequency (RF)
The part of the general frequency spectrum
between the audio and infrared light
regions (about 10 kHz to 10,000,000 MHz).
Term Definition
Repeater
A conventional radio feature, where you
talk through a receive/transmit facility that
re-transmits received signals, in order to
improve communications range and
coverage.
Selective Switch
Any digital P25 traffic having the correct
Network Access Code and the correct
talkgroup.
Squelch
Special electronic circuitry, added to the
receiver of a radio, that reduces, or cuts off,
unwanted signals before they are heard in
the speaker.
Standby
An operating condition whereby the radio’s
speaker is muted but still continues to
receive data.
Status Calls
Pre-defined text messages that allow the
user to send a conditional message without
talking.
Tactical/
Non-Revert
The user talks on the channel that was
selected before the radio entered the
emergency state.
Talkaround
Bypass a repeater and talk directly to
another unit for easy local unit-to-unit
communications.
Term Definition