Continuing our theme of making Voice Over IP solutions for Ham Radio user-friendly and accessible to a greater audience, we have built the ClearRPT device. ClearRPT does NOT have an embedded RF transceiver but provides electrical connections for audio in and out, PTT, SQ and numerous Raspberry Pi GPIO pins. ClearRPT also includes a microphone conditioning circuit and a 2.5W Class D audio amplifier for an external speaker or headset.

Simplex or Duplex Repeater Controller

This is the essential building block if you are putting together a high powered Simplex Node e.g. using an external mobile rig like the Alinco DR X35 series of transceivers. We are building up an offering of quality, ready made interface cables for the most popular high power mobile rigs. Construct your own cable to suit your needs – the DSUB series of connectors are popular and readily available from all the usual electronic suppliers – eliminate those costly hardware repeater controllers.

Alinco DR-X35 Cable (MIL-SPEC Tefzel coated, shielded wire, Amphenol hardware)

Radio-less Full Duplex Access Node

You can also put together a radio-less node for use with your microphone, headset and Talk switch – purchase our ClearRPT-MnS Audio Adapter to hook up your typical headset, includes a built in Talk button and 3.5 mm stereo audio connectors and a 3.5 mm connector for an external foot switch. The stereo 3.5 mm audio jacks each have a jumper to bridge the Left and Right connections. Alternatively you can build out your own connector to attach to the onboard DSUB 15 pin female connector.

The ClearNode iOS and Android Mobile App

ClearRPT includes free access to our iOS and Android mobile apps – so you can control your ClearRPT in the same place you control your other ClearNode devices – anywhere you have an internet connection. We are extending the mobile app functionality to help those building Repeater Controllers with access to configuration items as they are identified by end users.

Integrated VOIP Software

Just like the original ClearNode Simplex Node, ClearRPT includes AllStar, the EchoLink channel driver and the DVSwitch MMDV_Bridge and Analog_Bridge services which provide integration with DMR, P25, YSF, FCS and NXDN reflectors and endpoints.

Connections provided via female DSUB 15 pin connector include:

  • Audio Line Level in and out – direct connect to USB audio encoder/decoder
  • Mic In – input to a microphone conditioner/amplifier, trim pot control of gain and compression
  • Speaker Out – 2.5 W Class D audio amplifier with trim pot control for gain
  • PPT active low output signal to drive the transmit function of your external transceiver
  • SQ active low input to receive the break squelch signal from the receiver of your external transceiver
  • 5 GPIO connections from the Raspberry Pi – implement your own logic from the Pi CPU
  • 5.2V and GND power connections