1ATEST(1)                    General Commands Manual                   ATEST(1)
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NAME

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

11       atest [ options ] wav-file-in
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13              wav-file-in is a WAV format audio file.
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DESCRIPTION

16       atest  is  a  test application which decodes AX.25 frames from an audio
17       recording.  This provides an easy way to test Dire Wolf  decoding  per‐
18       formance much quicker than normal real-time.
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OPTIONS

24       -B n   Data  rate  in  bits/sec.   Standard values are 300, 1200, 2400,
25              4800, 9600.
26                     300 bps defaults to AFSK tones of 1600 & 1800.
27                     1200 bps uses AFSK tones of 1200 & 2200.
28                     2400 bps uses QPSK based on V.26 standard.
29                     4800 bps uses 8PSK based on V.27 standard.
30                     9600 bps and up uses K9NG/G3RUH standard.
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33       -g     Force G3RUH modem regardless of data rate.
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36       -j     2400 bps QPSK compatible with Dire Wolf <= 1.5.
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39       -J     2400 bps QPSK compatible with MFJ-2400.
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42       -D n   Divide audio sample rate by n.
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45       -h     Print frame contents as hexadecimal bytes.
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48       -F n   Amount of effort to try fixing frames with an  invalid  CRC.   0
49              (default) = consider only correct frames.  1 = Try to fix only a
50              single bit.  more = Try modifying more bits to get a good CRC.
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53       -L     Error if Less than this number decoded.
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56       -G     Error if Greater than this number decoded.
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59       -P m   Select the demodulator type such as D (default for 300 bps),  E+
60              (default for 1200 bps), PQRS for 2400 bps, etc.
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EXAMPLES

66       gen_packets -o test1.wav
67       atest test1.wav
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69       gen_packets -B 300 -o test3.wav
70       atest -B 300 test3.wav
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72       gen_packets -B 9600 -o test9.wav
73       atest -B 9600 test9.wav
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75              This generates and decodes 3 test files with 1200, 300, and 9600
76              bits per second.
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78       atest 02_Track_2.wav
79       atest -P E- 02_Track_2.wav
80       atest -F 1 02_Track_2.wav
81       atest -P E- -F 1 02_Track_2.wav
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83              Try different combinations of options to compare  decoding  per‐
84              formance.
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SEE ALSO

87       More    detailed    information    is    in    the    pdf    files   in
88       /usr/local/share/doc/direwolf,  or  possibly   /usr/share/doc/direwolf,
89       depending on installation location.
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91       Applications  in  this  package:  aclients,  atest, cm108, decode_aprs,
92       direwolf, gen_packets, kissutil,  ll2utm,  log2gpx,  text2tt,  tt2text,
93       utm2ll
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98                                                                      ATEST(1)
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