Motorola ASTRO APX 7500 Series Quick Reference Card page 138

Term
Check channel activity by pressing the
Monitor button. If the channel is clear, you
hear static. If the channel is in use, you
hear conversation. It also serves as a way
Monitor
to check the volume level of the radio,
since the radio "opens the squelch" when
the monitor button is pressed.
Multi-System
A scan list that can include both talkgroups
Talkgroup Scan
(trunked) and channels (conventional).
List
Network Access Code (NAC) operates on
digital channels to reduce voice channel
Network Access
interference between adjacent systems
Code
and sites.
Nickel-cadmium
NiCd
Nickel-metal-hydride
NiMH
The user talks on a preprogrammed
Non-Tactical/
emergency channel. The emergency alarm
Revert
is sent out on this same channel.
Over-the-air rekeying
OTAR
A one-way alert, with audio and/or display
Page
messages.
A set of unique features specific to a radio.
Personality
124
English
Definition Term
Personal Identification Number.
PIN
Refers to a software feature that has been
Preprogrammed
activated by a qualified radio technician.
A feature that lets you have a private
Private
conversation with another radio user in the
(Conversation)
talkgroup.
Call
A sub-audible tone that is transmitted such
Private Line
that only receivers decoding the tone
(PL)
receives it.
Refers to a radio control that can have a
Programmable
radio feature assigned to it.
Push-To-Talk – the PTT button engages
the transmitter and puts the radio in
PTT
transmit (send) operation when pressed.
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
re-transmits received signals, in order to
Repeater
improve communications range and
coverage.
Definition