How to Build a Custom Programming Cable for the Abbree AR-318

I recently picked up an Abbree AR-318 ham radio, but couldn’t find a programming cable pinout anywhere online. After some trial and error, I mapped out the correct connections. Sharing them here to save you time and frustration.

The cable uses a standard RJ45 (8P8C) connector. Here is the pinout and wiring diagram.

8P8C/RJ45 connector pin numbering used in the table below.
RJ45UART
Pin 2TxD
Pin 5RxD
Pin 6GND

To program the radio, you can use CHIRP. In the device settings, select Baojie BJ-318 as the model – the Abbree AR-318 is 100% software-compatible with it.

This simple cable setup lets you program frequencies, channels, and radio settings without buying the proprietary cable from the manufacturer.