Compatible with every sound card equipped computer.The PTT control uses the RTS line in the virtual COM port created after driver installation. Positive and fully automatic PTT control is supplied from the computer to the radio from USB port through the circuit based on the FTDI USB to serial bridge controller and the optocoupler for proper optical isolation between your computer and the radio. Input and output audio signals from the radio to the computer and vice versa are supplied through 1:1 bi-directional audio transformers for proper isolation of the circuit. This data mode interface is designed for Yaesu FT-847 transceiver.
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