Motorola radius gm300 用户手册

 

Turn the ON/OFF VOLUME knob to the right until it clicks. The LED lights will show the last sta-
tus of the radio, and a start-up tone will be heard.

 

Set the volume by turning the ON/OFF VOLUME knob clockwise. 

Select the channel by pressing the UP/DOWN ( 

/

) button. An extended press will scroll 

through the channels.

To monitor a channel, push the MONITOR (

) button or take the microphone off hook. When 

in the monitor mode, the amber MONITOR LED will light steadily.

To unsquelch the radio, press and hold the MONITOR (

) button for two seconds.

To leave the unsquelched mode, press the MONITOR (

) button again. This will return the 

radio to the coded squelch (PL/DPL) mode. 

A short beep tone will be heard whenever a keypress is made.

 

When the channel is clear, press and hold down the Push-to-Talk (PTT) button on the side of the 
microphone, and speak slowly and clearly. The TRANSMIT/BUSY LED will remain red until the 
PTT button is released to indicate that you are “on the air”. 

The red TRANSMIT/BUSY LED will flash whenever there is another carrier on the selected chan-
nel.

 

If your radio has the Time-out-timer (TOT) function activated, transmission will termi-
nate if you hold the PTT button down for over 60 seconds or the programmed time 
period. When this occurs, an alert tone sounds four seconds before the transmission is 
cut. To resume transmitting, release the PTT and push again.

ON/OFF

VOLUME

CHANNEL

UP

MONITOR

LED

SCAN

LED

TRANSMIT/

BUSY LED

MONITOR

SELECT

SPEAKER

SCAN

CHANNEL

DOWN

MICROPHONE

CONNECTOR

+

 

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