Dire Wolf

Soundcard Packet TNC, APRS Digipeater, IGate, APRStt gateway

Dire Wolf - Decoded Information from Radio Emissions for Windows Or Linux Fans


In the early days of Amateur Packet Radio, it was necessary to use a “Terminal Node Controller” (TNC) with specialized hardware.  Those days are gone.  You can now get better results at lower cost by connecting your radio to the “soundcard” interface of a computer and running free software.


Dire Wolf is a software "soundcard" modem/TNC and APRS * encoder/decoder.   It can be used stand-alone to observe APRS traffic, as a digipeater, APRStt gateway, or Internet Gateway (IGate).    It can also be used as a virtual TNC for other applications such as APRSIS32UI-View32XastirAPRS-TWYAACUISSLinux AX25SARTrackRMS Express, and many others.




  • Lower cost, higher performance alternative to hardware TNC.
  • Version 1.2 decodes more than 1000 error-free frames from WA8LMF TNC Test CD.  
  • Ideal for building a Raspberry Pi digipeater & IGate.
  • 300, 1200, and 9600 baud operation.
  • Interface with applications by

      - AGW network protocol

      - KISS serial port

      - KISS network protocol

  •  Decoding of received information for troubleshooting.
  • Logging and conversion to GPX file format.
  •  Beaconing for yourself or other nearby entities.
  • GPS Tracker (Linux version only).
  • Very flexible Digipeating with routing and filtering between up to 6 ports.
  • APRStt gateway - converts touch tone sequences to APRS objects.
  • APRS Internet Gateway (IGate) with IPv6 support.
  • Compatible with software defined radios (SDR) such as gqrx  and rtl_fm.
  • Includes separate raw packet decoder, decode_aprs.
  • Open source so you can see how it works and make our own modifications.
  • Runs in 2 different environments:

      - Microsoft Windows XP or later

      - Linux, regular PC or single board computer such as Raspberry Pi, BeagleBone Black, or cubieboard 2


Join the conversation in these groups!


Dire Wolf packet TNC 

Raspberry Pi 4 Ham Radio

TAPR aprssig


 * APRS is a registered trademark of APRS Software and Bob Bruninga, WB4APR.