This data mode interface can be used with ANY transceiver. 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. Positive and fully automatic PTT control is supplied from the computer to the radio from the USB port through the circuit based on the USB to serial bridge controller and the optocoupler for proper optical isolation between your computer and the radio. The PTT control uses the RTS line, and CW control uses the DTR line in the virtual COM port created after driver installation.
The interface uses CH340G produced by WCH as the serial port chip. It’s strongly recommended to download the original driver from the WCH official website at https://www.wch.cn for correct operation. The interface can be used for CAT and programming using CI-V protocol.
Connections (see photos):