Motorola APX 7500 O5 User Manual page 117

Term
Mode A programmed combination of operating
parameters; for example, a channel or
talkgroup.
Mode-Slaving Radio programmed to automatically give
the proper operation for a given mode you
have selected.
Monitoring Press a programmed monitor button to
(Conventional listen to another user active on the
Operation) channel. This way, you may be prevented
from talking over someone else's
conversation.
Page A one-way alert, with audio and/or display
messages.
Push-To-Talk (PTT) The PTT button engages the transmitter
button and puts the radio in transmit (send)
operation when pressed. Press this button
to transmit; release it to receive.
Repeater A conventional radio feature, in which you
talk through a receive/transmit facility
(repeater) that re-transmits received
signals in order to improve
communications range and coverage.
Definition Term
RF Radio Frequency. A part of the general
frequency spectrum between the audio
and infrared light regions (about 10 kHz to
10,000,000 MHz).
RSSI Received Signal Strength Indicator.
Squelch The muting of audio circuits when received
signal levels fall below a pre-determined
threshold. With carrier squelch, you hear
all channel activity which exceeds the
radio's preset squelch level.
Standby An operating condition whereby the radio's
speaker is muted but still continues to
receive data.
Talkgroup An organization (or group) of radio users
who communicate with each other, using
the same communication path.
Tone Private-Line A continuous sub-audible tone transmitted
(PL) Coded with the carrier.
Squelch
Definition
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English