[Repeater-Builder] Icom OPC-617 Cable

[ryan_151]

im trying to use the OPC-617 cable with an Icom f121 radio to connect it to an 
intercom and need to know how what pins to use to connect my mic+- audio into 
the F121 radio and the f121 radio audio out +-.  Any help with this woud be 
great, Thanks