| ATEST(1) | General Commands Manual | ATEST(1) |
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
- Data rate in bits/sec. Standard values are 300, 1200, 2400, 4800, 9600.
1200 bps uses AFSK tones of 1200 & 2200.
2400 bps uses QPSK based on V.26 standard.
4800 bps uses 8PSK based on V.27 standard.
9600 bps and up uses K9NG/G3RUH standard.
AIS for ship Automatic Identification System.
EAS for Emergency Alert System (EAS) Specific Area Message Encoding (SAME).
- -g
- Force G3RUH modem regardless of data rate.
- -j
- 2400 bps QPSK compatible with Dire Wolf <= 1.5.
- -J
- 2400 bps QPSK compatible with MFJ-2400.
- -D n
- Divide audio sample rate by n.
- -h
- Print frame contents as hexadecimal bytes.
- -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.
- -L
- Error if Less than this number decoded.
- -G
- Error if Greater than this number decoded.
- -P m
- Select the demodulator type such as D (default for 300 bps), E+ (default for 1200 bps), PQRS for 2400 bps, etc.
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
atest 02_Track_2.wav
atest -P E- 02_Track_2.wav
atest -F 1 02_Track_2.wav
atest -P E- -F 1 02_Track_2.wav
SEE ALSO¶
More detailed information is in the PDF files at https://github.com/wb2osz/direwolf/tree/master/doc/.
Applications in this package: aclients, atest, cm108, decode_aprs, direwolf, gen_packets, kissutil, ll2utm, log2gpx, text2tt, tt2text, utm2ll