XIEGU G1M Operation Manual page 5

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7 Antenna interface
BNC Connector. Impedance 50Ω.
8 ACC interface
Output band voltage signal and PTT signal. See
below.
9 COMM interface
PC Communication interface / firmware upgrade
interface.
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10 KEY interface
This interface is a 3.5mm stereo jack (3-pin) for
connecting manual or automatic telegraph keys.
11 SPK External speaker interface
This interface is a 3.5mm stereo jack (3 conductor)
for connecting external speakers.
12 DC IN external DC power interface
This interface is a 5.5*2.5mm DC power socket.
13 Grounding screw nut
Ground connection for equipment.
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