Smart Communications Ltd SCU99BL Benutzerhandbuch

 

9 

LED   ON CONDITION 
 
GREEN Channel is Busy (in use); or not programmed (if the 

channel has not been programmed a beep will be heard 
every four seconds) 

 
RED   PTT is pressed; transmitter is activated 
 
Flashing RED  Battery is low when PTT is pressed. 
 
 
CHANNEL SELECTION 
Rotate the CHANNEL SELECTOR switch until the knob’s pointer is at the desired 
channel number.  Each time the switch is turned to a different channel, a beep will 
be heard.   
 
MODE SELECTION 
Pressing the FUNC button changes the radio’s mode.  To select the Monitor Mode, 
press the FUNC button and when a burst of audio noise is heard, the radio is in the 
monitor mode 
 
TONE OPERATION 
To select the sub-audible Tone Mode, press the FUNC button and if the TX/Busy 
indicator blinks once and a single beep is heard, the radio is in the Tone Mode. 
 
NOTE:  The Unit can be programmed by the Dealer for sub-audible and or audible 
tones.  Each channel may be programmed for non-tone, for the same tone or for a 
different tone.  Each channel can have it’s own unique tones on TX and RX. 
 
If a signal with an improper or non-matching tone is received, the BUSY LED will 
light, but the squelch will not open and no audio will be heard. 
 
 

BUSY CHANNEL LOCKOUT 
Busy Channel Lockout (BCL) is a special Tone Mode feature.  When enabled by the 
dealer, it prohibits monitoring or transmitting on a channel that is receiving a signal with 
an improper CTCSS/DCS code.  No audio will be heard from the speaker, the GREEN 
LED will be illuminated.