Motorola APX 5500 User Manual page 133

6875946M01-JK
Glossary
A backup system that allows communication in a non-trunked, conventional mode if the trunked system
fails.
FCC
Federal Communications Commission.
Hang up
Disconnect.
Key Variable Loader (KVL)
A portable, handheld, rugged device used to transfer encryption
keys to a target device. Encryption keys can be entered manually by the KVL user, auto-generated by
the KVL, obtained from or shared with another KVL, or downloaded from a Key Management Facility
(KMF).
Liquid-Crystal Display (LCD)
An LCD uses two sheets of polarizing material with a liquid-crystal solution between them. An electric
current passed through the liquid causes the crystals to align so that light cannot pass through them.
Light Emitting Diode (LED)
An electronic device that lights up when electricity is passed through it.
MCHB
Millennium Control Head Board.
MDC
Motorola Solutions Digital Communications.
Menu Entry
A software-activated feature shown at the bottom of the display. Selection of a feature is controlled by
the programming of the buttons on the side of the radio.
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.
Non-tactical/revert
The user will talk on a preprogrammed emergency channel. The emergency alarm is sent out on this
same channel.
Over-The-Air Rekeying
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