NAME

       direwolf - Soundcard TNC for packet radio.

SYNOPSIS

       direwolf [ options ] [ - | udp:9999 ]

       The  first  audio  channel  can be streamed thru stdin or a UDP port.  This is typically used with an SDR
       receiver.

DESCRIPTION

       direwolf  is a software "soundcard" modem/TNC and APRS encoder/decoder.  It can be  used  stand-alone  to
       receive APRS messages, as a digipeater, APRStt gateway, or Internet Gateway (IGate).  It can also be used
       as  a  virtual TNC for other applications such as APRSIS32, UI-View32, Xastir, APRS-TW, YAAC, UISS, Linux
       AX25, SARTrack, RMS Express, and many others.

OPTIONS

       -c file
              Read configuration file from specified location rather than the default locations.

       -l dir Generate log files in specified directory.  Use "." for current directory.

       -r n   Audio sample rate per second for first channel.  Default 44100.

       -n n   Number of audio channels for first device.  1 or 2.  Default 1.

       -b n   Audio sample size for first channel.  8 or 16.  Default 16.

       -B n   Data rate in bits/sec for first channel.  Standard values are 300, 1200, 9600.
                     If < 600, tones are set to 1600 & 1800.
                     If > 2400, K9NG/G3RUH scrambling is used.
                     Otherwise, AFSK tones are set to 1200 & 2200.

       -D n   Divide audio sample by n for first channel.

       -d x   Debug options.  Specify one or more of the following in place of x.
                     a = AGWPE network protocol client.
                     k = KISS serial port client.
                     n = Network KISS client.
                     u = Display non-ASCII text in hexadecimal.
                     p = Packet dump in hexadecimal.
                     t = GPS Tracker.
                     o = Output controls such as PTT and DCD.

       -q x   Quiet (suppress output). Specify one or more of the following in place of x.
                     h = Heard line with the audio level.
                     d = Decoding of APRS packets.

       -t n   Text colors.  1=normal, 0=disabled.

       -p     Enable pseudo terminal for KISS protocol.

       -x     Send Xmit level calibration tones.

       -U     Print UTF-8 test string and exit.

EXAMPLES

       gqrx (2.3 and later) has the ability to send streaming audio through a UDP socket to another  application
       for further processing.  direwolf can listen over a UDP port with options like this:

              direwolf -n 1 -r 48000 -b 16 udp:7355

       Other  SDR  applications  might  produce  audio  on  stdout  so  it  is  convenient to pipe into the next
       application.  In this example, the final "-" means read from stdin.

              rtl_fm -f 144.39M -o 4 - | direwolf -n 1 -r 24000 -b 16 -

SEE ALSO

       More  detailed  information  is  in  the  pdf  files  in   /usr/local/share/doc/direwolf,   or   possibly
       /usr/share/doc/direwolf, depending on installation location.

       Applications  in  this  package:  aclients,  atest,  decode_aprs, direwolf, gen_packets, ll2utm, log2gpx,
       text2tt, tt2text, utm2ll

                                                                                                     DIREWOLF(1)