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Glossary
English
73
Man Down
A life-saving feature that senses the radio
user may be in trouble by monitoring the
whether the radio is in a vertical or
horizontal position or whether the radio is
motionless.
When this feature is triggered, the radio
alerts the user with audio and visual alerts.
It can also trigger Emergency Alarm if
enabled.
Monitor
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
to check the volume level of the radio,
since the radio “opens the squelch” when
the monitor button is pressed.
Multi-System
Talkgroup Scan
List
A scan list that can include both talkgroups
(trunked) and channels (conventional).
Network Access
Code
Network Access Code (NAC) operates on
digital channels to reduce voice channel
interference between adjacent systems
and sites.
NiMH Nickel-metal-hydride.
Term Definition
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
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