User`s guide

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HearClear™ An advanced audio processing technology that reduces noise and
provides crisp, clear audio. It can enhance reception even in marginal
conditions. This type of processing is only used in Motorola 900 MHz
systems and is not used in Motorola 800 MHz systems.
Home Channel The channel the user was on prior to pushing the SCAN button.
Home Revert The channel the user will revert to when PTT is pressed while in scan
mode unless the scan talkback feature is enabled. Defines the transmit
channel requirement for a feature. Typically refers to scan mode
operation.
kHz Kilohertz, thousands of cycles per second.
Key Refers either to a button on the radio or computer's keyboard or to the
act of turning the transmitter to the on position.
LCD Liquid Crystal Display.
LED Light Emitting Diode. A visual indicator on the radio that flashes or
glows.
Logic Board The circuit board within the radio that contains the embedded
microprocessor and other logic-related components.
Low Battery Alert An audible alert tone that is generated when the radio’s battery charge
is low.
MDC-1200 A Motorola-proprietary signaling format. It is a binary format using a
1200-baud Minimum Shift Keying modulation. MDC-1200 is used for
IDs, Selective Signaling, Emergency, Status/Message and Text.
MHz Megahertz, million of cycles per second.
MS-DOS Microsoft Disk Operating System. The operating system used by IBM
compatible computers.
Menu Contains a list of functions that can be selected and performed by
pressing a function key. Also see “Screen”.
Memory Dialer A DTMF phone number dialer that stores up to 16 phone numbers.
Each phone number can contain up to sixteen DTMF digits.
Message Time-Out Timer A timer in the system Central Controller that maintains a channel
allocation for calling parties. The timer may be programmed to time
out the channel allocation within 0 to 6 seconds after de-key.
Message Trunking A type of Trunking operation. When PTT is released, a Portable radio
will remain on the voice channel for a pre-programmed period of time.
This allows other members of the talkgroup to respond without
returning to the control channel for another voice channel
assignment. Message Trunking is commonly referred to as Hangtime
on the repeater. Message Trunking Systems generate less control
channel traffic per conversation than Transmission Trunking Systems.
Microcomputer The central processing unit that controls the functions of the radio.