Service Manual

8
Software Description
Radio Feature Description
Feature Description
1 56 UHF frequencies available Frequency Range:
461.0375 - 469.5625 MHz
2 Selectable number of available
channels 1-8
User can select 1-8 frequencies from 56
available frequencies
3 Selectable 121 Interference Eliminator
Codes
Include 38 CTCSS and 83 CDCSS
4 LCD Display Display operation status and setting
modes
5 LCD Backlight
6 Keypad Lock Pressing any key is invalid except PTT,
briefly pressing MENU key and holding
down CALL key.
7 VOX Feature Only available when connected with
external audio accessory.
8 Five VOX Sensitivity Levels Available The lower the level, the higher the
sensitivity.
9 Battery Power Indicator
10 Low Battery Alert The radio will sound alert when the
battery voltage is lower than preset
threshold value.
11 Channel Scan The radio will only scan the selected 1-8
channels. If 4 channels are selected, the
radio will scan these 4 channels only.
12 Battery Save (Sleep Mode) The radio will enable battery save
feature if no button is pressed and no
operation takes place within 25 seconds.
The radio will switch between 200ms
standby mode and 600ms sleep mode.
13 Clock Display and Alarm Clock
14 Five CALL TONES available The radio will sound call tone when
receiving a valid call. User can disable
the call tone.
15 PC Programmable In this mode, MCU is connected with PC
via UART port.
16 Enable/Disable Certain Features
(through PC programming)
17 Wired Clone MCU transfer the data in one radio to
another via UART port.