Glossary-5
Transceiver Transmitter-Receiver. A device that both transmits and receives analog or
digital signals. Also abbreviated as XCVR.
Transmitter Electronic equipment that generates and amplifies an RF carrier signal,
modulates the signal, and then radiates it into space.
TRC Tone Remote Control
Trunking Radio control system which permits efficient frequency utilization and
enhanced control features.
Tx Transmit.
Type II Trunking Motorola trunking system which provides extended features.
UHF Ultra High Frequency
USB Universal Serial Bus: An external bus standard that supports data transfer
rates of 12 Mbps.
Voltage-Controlled Oscillator; an oscillator whereby the frequency of oscillation
can be varied by changing a control voltage.
VHF Very High Frequency
VIP Vehicle Interface Port.
VOX Voice Operated Switch; Used with MRTI.
VSWR Voltage Standing Wave Ratio.
WCI Wildcard Input
WCO Wildcard Output
WFI Word Frame Interrupt; used to synchronize trunking data messages in a Smart
Repeater system.
Wide Area Wide area systems allow expanded radio coverage by using multiple receivers
and/or transmitters.
WL Wireline
WL Rx Wireline Receive; information from station RF Receiver sent to wireline
equipment.
WL Tx Wireline Transmit; information from wireline equipment sent to station RF
transmitter.
XPR Refers to Digital Professional Repeater model names in the MOTOTRBO
Professional Digital Two-Way Radio System.
Term Definition
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