User's Manual

LCD
Liquid-Crystal Display: 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.
LED
Light Emitting Diode: An electronic device that lights up when electricity is passed through it.
MDC
Motorola Data Communications. 1200 or 4800 baud data signalling scheme.
MHz
Megahertz: One million cycles per second. Used especially as a radio-frequency unit.
MISO
Master In, Slave Out.
MOSI
Master Out, Slave In.
PA
Power Amplifier that transmits final RF signal to transmit antenna.
PC Board
Printed Circuit Board. Also referred to as a PCB.
PFC
Power Factor Correction.
PL
Private-Line Tone Squelch: A continuous sub-audible tone that is transmitted along with the carrier.
Programming Cable
A cable that allows the Radio Management to communicate directly with the radio using RS232.
PTT
Push-to-talk; the switch located on the left side of the radio which, when pressed causes the radio to
transmit.
Radio Management
Software with a graphical user interface containing the feature set of a device.
Receiver
Electronic device that amplifies RF signals. A Receiver separates the audio signal from the RF carrier,
amplifies it, and converts it back to the original sound waves.
MN003557A01-AA
Glossary of Terms and Acronyms
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Preliminary FCC Filing