Smart Communications Ltd SCU99BL Benutzerhandbuch

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TRANSMITTER OPERATION 
 
WARNING:  In some countries, a license may be required to operate.  Do Not transmit 
on Unlicensed channels. 
 
WARNING:  Do Not operate this Unit close to electrical blasting caps, or in an explosive  
Atmosphere such as fuel or solvent vapors, dust, etc. 
 
PROCEDURE 
1. Select the desired channel.  Monitor the channel for activity before transmitting.  If 
the BUSY LED is ON and no audio is heard, the channel is busy with another tone 
code.  
 
Press and hold in the Push-To-Talk (PTT) switch located on the left side of the Unit 
and speak into the radios internal microphone. 
 
a. If BCL is enabled and the channel is busy, a series of beeps will be heard as 
long as the PTT switch is held in and the radio will not transmit.    
 
b. If the Channel is Receive Only, a series of beeps will be heard and the Radio 
will NOT transmit. 
 
 
HIGH/LOW POWER SELECTION 
To adjust the power level of the Radio press the push button switch located on the top 
panel.  When the switch is in the UP position, the radio is in the high power mode. 
 
 
TIME OUT TIMER 
A transmit Time Out Timer is built into the Unit.  The Timer can be programmed by a 
Dealer to automatically shut down the transmitter after a pre-programmed amount of time 
even if the PTT switch is held in continuously.  If the Time Out Timer is disabled the 
length of any transmission is determined by how long the PTT switch is held in. 
 
If the Time Out Timer is enabled, a series of beeps will be heard and the TX LED will go 
out when the PTT switch is held in after the Timer has timed out.  To resume the 
transmitting, momentarily release the PTT switch and then press again. 
 
BEEP 
When the Beep feature is disabled, a beep will not be heard when the Channel Selector is 
turned.  However, beeps will still be heard when the FUNC button is pressed, or when the 
PTT is pressed and the channel is a Receive Only channel.  In this case, a series of error 
beeps will be heard until the PTT button is released.