User's Manual

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4 PTT/TXD0 PTT/PC Serial Data 3.3V TTL I
5 ME MIC Ground MIC Ground -
6 MIC MIC Signal Input 600Ω I
7 HOOK/RXD0 HOOK/PC Serial Data 3.3V TTL I
8 DM MIC Data Detection High Impedance I/O
Speaker Jack(3.5mm Phone Jack) 4Watt/4Ω
Pin NO Pin Name Description Specification I/O Remake
1 SPO
External Speaker Output
4Watt/4Ω O
2 GND Ground Ground O
DC Input Power Connector
Pin NO Pin Name Description Specification I/O Remake
Red DC+13.6V DC Power Output 13.6±15% I
Black GND Ground Ground I
Antenna Connector
Impedance is 50
7. Specification
7.1 TM-8102 / TM-8104
General
Frequency Range
Frequency Stability
VHF: 136 ~ 174 MHz
±1.5PPM (-30 to +60℃)