Interconnect boards connect the 8-pin modular jack ports on the MaplePi and MapleDroid modules to radios using more common connectors and also provide adjustments for transmit and receive audio.
Currently there are two available. The first has RCA jacks for the audio, and a barrier strip for the DC power, PTT and COR.
The second was designed specifically for use with the R97S from Retevis, but is not restricted to it. It features a DB-9 connector for the radio, and two Anderson power poles for the DC connection.
The pinout of the DB-9 is as follows:
