NAME

       atest - Decode AX.25 frames from an audio file.

SYNOPSIS

       atest [ options ] wav-file-in

              wav-file-in is a WAV format audio file.

DESCRIPTION

       atest  is  a  test  application  which decodes AX.25 frames from an audio recording.  This
       provides an easy way to test Dire Wolf decoding performance much quicker than normal real-
       time.

OPTIONS

       -B n   Bits  / second for data.  Proper modem selected for 300, 1200, 9600.  300 baud uses
              1600/1800 Hz AFSK.  1200 (default) baud uses 1200/2200 Hz  AFSK.   9600  baud  uses
              K9NG/G2RUH standard.

       -D n   Divide audio sample rate by n.

       -F n   Amount  of effort to try fixing frames with an invalid CRC.  0 (default) = consider
              only correct frames.  1 = Try to fix only a single bit.  more = Try modifying  more
              bits to get a good CRC.

       -P m   Select  the  demodulator type such as A, B, C, D (default for 300 baud), E (default
              for 1200 baud), F, A+, B+, C+, D+, E+, F+.

EXAMPLES

       gen_packets -o test1.wav
       atest test1.wav

       gen_packets -B 300 -o test3.wav
       atest -B 300 test3.wav

       gen_packets -B 9600 -o test9.wav
       atest -B 9600 test9.wav

              This generates and decodes 3 test files with 1200, 300, and 9600 bits per second.

       atest 02_Track_2.wav
       atest -P C+ 02_Track_2.wav
       atest -F 1 02_Track_2.wav
       atest -P C+ -F 1 02_Track_2.wav

              Try different combinations of options to find the best decoding performance.

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

                                                                                         ATEST(1)