Motorola PR1500 用户手册
PR1500
49
Glossary
Radio Frequency
(RF)
(RF)
The part of the general frequency spectrum
between the audio and infrared light regions
(about 10 kHz to10,000,000 MHz).
between the audio and infrared light regions
(about 10 kHz to10,000,000 MHz).
Repeater
A conventional radio feature, where you talk
through a receive/transmit facility (repeater),
that re-transmits received signals in order to
improve communications range and
coverage.
through a receive/transmit facility (repeater),
that re-transmits received signals in order to
improve communications range and
coverage.
Squelch
Special electronic circuitry added to the
receiver of a radio which reduces, or
squelches, unwanted signals before they are
heard in the speaker.
receiver of a radio which reduces, or
squelches, unwanted signals before they are
heard in the speaker.
Standby
An operating condition whereby the radio’s
speaker is muted but still continues to receive
data.
speaker is muted but still continues to receive
data.
Tactical/Non-revert The user will talk on the channel that was
selected before the radio entered the
emergency state.
emergency state.
Talkaround
Bypass a repeater and talk directly to another
unit for easy local unit-to-unit
communications.
unit for easy local unit-to-unit
communications.
Talkgroup
An organization of radio users who
communicate with each other.
communicate with each other.
Zone
A grouping of channels.