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.
Non-Tactical/Revert
The user talks on a preprogrammed emergency
channel. The emergency alarm is sent out on this same
channel.
OCW
Operation Critical Wireless.
OTAR
Over-the-air rekeying.
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A one-way alert, with audio and/or display messages.
Personality
A set of unique features specific to a radio.
PIN
Personal Identification Number.
Preprogrammed
Refers to a software feature that has been activated by
a qualified radio technician.
Private (Conversation) Call
A feature that lets you have a private conversation with
another radio user in the talkgroup.
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).
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.
English
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