PT6808 Service Manual
When pressing down the Power Button, the power level of the CPU port pin is low level, and
then CPU port outputs high level. Q18 is connected, SB SW (Q9) is connected and supplies power to
the radio. This circuit has overload voltage protection circuit. If the power supply line is provided
with 17V or higher voltage, D12 is connected and supplies power to Q17. The voltage makes Q17
connected and makes Q18 and SB disconnected.
Chapter 5 Function Description and Parameter Settings
5.1 Characteristics
(1) The radio conforms to the MPT1327 signaling protocol standard, applies to a variety of base
station systems, including: Tait, TaiHe, WanGe, QiaoHang etc., and supports various call methods.
(2) The radio conforms to the MPT1343 standard and Public Security Department CPSX encoding
standard.
(3) The radio is provided with special functions of remote killing, reactivating, and dynamic
grouping.
(4) 32 conventional channels, standard CTCSS/DCS signaling, BCL, TOT, and scan function to
satisfy talk-around requirement.
(5) 16 test frequencies and parameter indications, which are convenient for the dealer to test the
radio.
(6) Power, deviation, sensitivity and other parameters are programmed at the factory.
5.2 Trunked Features
1) Trunking signaling
The radio conforms to MPT1327 trunking signaling, MPT1343 standard and Public Security
Department CPSX encoding standard.
2) Auto scan
64 control channels can be programmed for the radio, and the radio will hunt for a control
channel automatically.
3) Trunking calls
The following calls can be performed by the radio: multi-zone individual call, multi-zone group
call, multi-group individual call, multi-group group call, voice call, status call, short data message
call, call transfer, conference call, broadcast call, priority call, emergency call, PABX call, PSTN call,
status message call, short message status call, NPD free form data transfer, own call diversion, third
party call diversion, include call, ALLI call, network operator service call, technician call,
