Motorola ASTRO MT 1500 User Manual download pdf (Page 64)

MT 1500 Model 1 53

Glossary

This is a list of specialized terms used in this manual.

ACK Acknowledgment of communication.

Active Channel A channel that has traffic on it.

Analog Signal An RF signal that has a continuous nature

rather than a pulsed or discrete nature.

Call Alert A page received by your radio, along with an

audible tone.

Carrier Squelch Feature that responds to the presence of an

RF carrier by opening or unmuting (turning

on) a receiver's audio circuit. A squelch circuit

silences the radio when no signal is being

received so that the user does not have to

listen to noise.

Central Controller A software controlled, computer-driven device

that receives and generates data for the

trunked radios assigned to it. It monitors and

directs the operations of the trunked

repeaters.

Channel A group of characteristics such as transmit/

receive frequency pairs, radio parameters,

and encryption encoding.

Control Channel In a trunking system, one of the channels that

is used to provide a continuous, two-way/data

communications path between the central

controller and all radios on the system.

Conventional Typically refers to radio-to-radio

communications, sometimes through a

repeater. (See Trunking.)

Digital Signal An RF signal that has a pulsed, or discrete

nature, rather than a continuous nature.

Dispatcher An individual who has radio system

management duties.

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Motorola ASTRO MT 1500 User Manual Page 64