Radio interface RI-3

Interface board RI-3 V1.0


Suitable for:

  • Echolink
  • Freeradionetwork
  • Digital Master
  • Fldigi
  • and other software for digital modes


PTT Trigger from PC:

  • RS232 port (RTS or DTR)
  • Pilot tone, in certain software as Freeradionetwork
  • VOX

NOTE: For Pilot tone and VOX function is necessary to connect the dual power supply +12V/-12V


PTT Trigger to RADIO:

  • Isolated, optocoupler


Connection diagrams: