Glossary-2
Paging One-way communication that alerts the receiver to retrieve a message.
PC Board Printed Circuit Board. Also referred to as a PCB.
PL Private-Line Tone Squelch: A continuous sub-audible tone that is transmitted along
with the carrier.
Programming
Cable
A cable that allows the CPS to communicate directly with the radio using USB.
Receiver An electronic device that recovers information from a modulated RF signal. A receiver
separates the audio signal from the RF carrier, amplifies it, and converts it back to the
original sound waves.
Repeater Remote transmit/receive facility that re-transmits received signals in order to improve
communications range and coverage (conventional operation).
RF Radio Frequency: The portion of the electromagnetic spectrum between audio sound
and infrared light (approximately 10 kHz to 10 GHz).
RX Receive.
Signal An electrically transmitted electromagnetic wave.
Spectrum Frequency range within which radiation has specific characteristics.
Squelch Muting of audio circuits when received signal levels fall below a pre-determined value.
With carrier squelch, all channel activity that exceeds the radio’s preset squelch level
can be heard.
TOT Time-out Timer: A timer that limits the length of a transmission.
TPL Tone Private Line
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.
TX Transmit.
UHF Ultra-High Frequency.
USB Universal Serial Bus: An external bus standard that supports data transfer rates of 12
Mbps.
USB_DM_MAP USB D- Connection at the rear accessory connector.
USB_DP_MAP USB D+ Connection at the rear accessory connector.
VHF Very High Frequency.
VIP Vehicle Interface Port.
Wi-Fi Wireless Fidelity
XPR Refers to Digital Professional Radio model names in the MOTOTRBO Professional
Digital Two-Way Radio System.
Term Definition
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