Fujian Quanzhou Beifeng Telecom Systems Co. Ltd. BF520801 用户手册

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页码 12
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Senior operation 
Auto-call function 
After turning on the power switch, when turn the selector, it with tone calling, 
from 1 channel to 16 channels, which enables you to select the channel conveniently. 
Monitor/squelch function OFF. 
To receive the weak signals, the channels doesn’t work or no signals to adjust the 
volume by this function.
 
Instant squelch function OFF: press to receive the background noise, release to get 
back the operation station. 
Scan 
1. If transceiver was set up at least 2 channels to scan, after pressing scan key 
for 1 second, the transceiver will check the channels automatically until check 
the signal to stop. Meanwhile it stay this channel until the signal disappear, 
if the signal disappear at once, the transceiver will stay for 5 second then 
scan. 
2. when scan, LED glitters green, if receive signal, LED displays green(not glitter). 
If you want to stop scan, press scan switch for 1 second again.  The channel 
of transceiver will stay the coder’s channel. 
3. press PTT keypad to transmit, the transceiver will choose the channels, which 
is the latest used. 
 
QT/DQT 
QT/DQT signals would be set up by the dealer. QT/DQT coder is mute volume/ coder, 
it enables you ignore the same channel to call other people. 
If one channel is set up the QT/DQT coder, it just can receive the exact frequency 
or coder’s signal to use squelch. So, QT/DQT mode same as your transceiver of the 
broadcast station just receive your signal. The squelch would not opened, if other 
use different QT/DQT in the same channel to call, so you will not listen the call, 
it enables you ignore these calls.  It seems like you have personal channels with 
QT/DQT, but, if others set up the same QT/DQT, they still can hear your call. 
Time-out timer 
The Time-out Timer (TOT) limits the time of each transmission. The built-in time-out 
timer limits each transmission time to a maximum of 300seconds. Just before the 
transceiver stops the transmission, a warning beeps sounds. It is necessary to 
protect the transceiver from thermal damage. You can turn this function OFF. 
Battery power-saving 
When it doesn’t receive the signal or doesn’t operate (don’t press keypad, don’t 
turn switch), the battery power-saving can reduce power. When the channels is no 
t busy and not operated for 5 seconds, the battery power-saving turned on, when