Hytera MD78X - Page 344

UHF5 (806MHz
–
941MHz)
Circuit Description
21
Pin
No.
Signal Function
I/O of the
Radio
Voltage
(Option Board
VDD=3.3 V)
Remarks
18 AF MB TO OB AF O
80 mV (standard
output from the main
board to the option
board)
MAX: 700 mV
19 DGND DGND / / /
20 3V6 or 5V Power O Voltage: 5.0 V /