Wouxun DIY Interface For KG-928

This is the Wouxun DIY interface that plugs into the side of select Wouxun amateur ham radios such as the KG-928 APRS radio. Documentation from Wouxun is very sparse. The adapter is also very small with the solder pads measuring ~1mm x ~2mm on a double sided PCB measuring ~14mm x ~9mm. The Wouxun manual indicates these communication points.

• Microphone Modulation
  
• Data RX
  
• Audio Modulation
  
• Data TX
  
• Transmitting Power
  
• Ground
  
• Squelch
  
• Ground
  
• Reset
  
• Null
  
• 3.3V
  
• Battery Power
  

When Wouxun named this the DIY interface they really mean Do It Yourself!