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new file: A-Better-APRS-Packet-Demodulator-Part-1-1200-baud.pdf new file: A-Better-APRS-Packet-Demodulator-Part-2-9600-baud.pdf modified: APRStt-Implementation-Notes.pdf modified: CHANGES.txt new file: Makefile modified: Makefile.linux modified: Makefile.win deleted: Quick-Start-Guide-Windows.pdf modified: Raspberry-Pi-APRS-Tracker.pdf modified: Raspberry-Pi-APRS.pdf modified: User-Guide.pdf modified: aclients.c modified: aprs_tt.c modified: aprs_tt.h modified: atest.c modified: audio.c modified: audio.h modified: audio_win.c modified: ax25_pad.c modified: ax25_pad.h modified: beacon.c modified: beacon.h modified: config.c modified: config.h modified: decode_aprs.c modified: decode_aprs.h modified: demod.c modified: demod.h modified: demod_9600.c modified: demod_9600.h modified: demod_afsk.c modified: digipeater.c modified: digipeater.h modified: direwolf.c modified: direwolf.conf deleted: direwolf.desktop modified: direwolf.h new file: direwolf.spec new file: direwolf.txt new file: dlq.c new file: dlq.h modified: dsp.c new file: dtime_now.c new file: dtime_now.h modified: dtmf.c modified: dtmf.h new file: dwespeak.bat new file: dwespeak.sh modified: fsk_demod_state.h modified: gen_packets.c modified: gen_tone.c new file: geotranz/README-FIRST.txt new file: geotranz/error_string.c new file: geotranz/error_string.h new file: geotranz/mgrs.c new file: geotranz/mgrs.h new file: geotranz/polarst.c new file: geotranz/polarst.h new file: geotranz/readme.txt new file: geotranz/releasenotes.txt new file: geotranz/tranmerc.c new file: geotranz/tranmerc.h new file: geotranz/ups.c new file: geotranz/ups.h new file: geotranz/usng.c new file: geotranz/usng.h new file: geotranz/utm.c new file: geotranz/utm.h modified: hdlc_rec.c modified: hdlc_rec.h modified: hdlc_rec2.c modified: hdlc_rec2.h modified: hdlc_send.c modified: igate.c modified: igate.h modified: kiss_frame.c modified: kiss_frame.h modified: kissnet.c modified: latlong.c modified: latlong.h modified: ll2utm.c modified: log.c modified: log.h new file: man1/aclients.1 new file: man1/atest.1 new file: man1/decode_aprs.1 new file: man1/direwolf.1 new file: man1/gen_packets.1 new file: man1/ll2utm.1 new file: man1/log2gpx.1 new file: man1/text2tt.1 new file: man1/tt2text.1 new file: man1/utm2ll.1 modified: multi_modem.c modified: multi_modem.h new file: pfilter.c new file: pfilter.h modified: ptt.c modified: ptt.h deleted: pttest.c modified: rdq.c new file: recv.c new file: recv.h modified: redecode.c modified: redecode.h modified: rrbb.c modified: rrbb.h modified: server.c modified: server.h modified: telemetry.c modified: telemetry.h modified: textcolor.c modified: textcolor.h modified: tocalls.txt modified: tq.c modified: tq.h modified: tt_text.c modified: tt_text.h modified: tt_user.c modified: tt_user.h new file: ttcalc.c deleted: udp_test.c deleted: utm/LatLong-UTMconversion.c deleted: utm/LatLong-UTMconversion.h deleted: utm/README.txt deleted: utm/SwissGrid.cpp deleted: utm/UTMConversions.cpp deleted: utm/constants.h modified: utm2ll.c modified: version.h new file: xid.c modified: xmit.c modified: xmit.h
113 lines
2.5 KiB
Groff
113 lines
2.5 KiB
Groff
.TH GEN_PACKETS 1
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.SH NAME
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gen_packets \- Generate audio file for AX.25 frames.
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.SH SYNOPSIS
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.B gen_packets -o
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.I wav-file-out
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[ \fIoptions\fR ] [ \fItext-file\fR | - ]
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.RS
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.P
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\fIwav-file-out\fR is the result. The -o option is required.
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.P
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\fItext-file\fR may contain AX.25 packets in the standard monitoring format. Use "-" to read from stdin. If not specified, a default builtin message will be used.
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.RE
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.SH DESCRIPTION
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\fBgen_packets\fR is a test application which converts text to AX.25 audio for testing packet decoders.
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It is very flexible allowing a wide range of audio sample rates, data speeds, and AFSK tones. It will even generate the scrambled signals commonly used for 9600 baud operation.
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.SH OPTIONS
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.TP
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.BI "-a " "n"
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Signal amplitude in range of 0 - 200%. Default 50. Note that 100% is corresponds to signal peaks of +/- 16383 so we have plenty of headroom to avoid saturation.
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.TP
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.BI "-b " "n"
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Bits / second for data. Default is 1200.
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.TP
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.BI "-B " "n"
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Bits / second for data. Proper modem selected for 300, 1200, 9600.
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.TP
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.BI "-g"
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Scrambled baseband rather than AFSK.
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.TP
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.BI "-m " "n"
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Mark frequency. Default is 1200.
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.TP
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.BI "-s " "n"
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Space frequency. Default is 2200.
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.TP
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.BI "-r " "n"
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Audio sample Rate. Default is 44100.
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.TP
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.BI "-n " "n"
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Generate specified number of frames with increasing noise. (For built-in message only.)
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.TP
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.BI "-o " "file"
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Send output to .wav file.
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.TP
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.B "-8"
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8 bit audio rather than 16.
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.TP
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.B "-2"
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2 channels of audio rather than 1.
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.SH EXAMPLES
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.P
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.B gen_packets -o x.wav
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.P
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.RS
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With all defaults, a built-in test message is generated
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with standard Bell 202 tones used for packet radio on ordinary
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VHF FM transceivers.
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.RE
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.P
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.B gen_packets -o x.wav -g -b 9600
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.PD 0
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.P
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.PD
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.B gen_packets -o x.wav -B 9600
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.P
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.RS
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Both of these are equivalent. "-B 9600" automatically selects scrambled baseband rather than AFSK.
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.RE
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.P
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.B gen_packets -o x.wav -m 1600 -s 1800 -b 300
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.PD 0
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.P
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.PD
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.B gen_packets -o x.wav -B 300
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.P
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.RS
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Both of these generate 200 Hz shift, 300 baud, suitable for HF SSB transceiver.
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.RE
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.P
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.B echo -n "WB2OSZ>WORLD:Hello, world!" | gen_packets -a 25 -o x.wav -
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.P
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.RS
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Read message from stdin and put quarter volume sound into the file x.wav.
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.RE
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.P
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.SH SEE ALSO
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More detailed information is in the pdf files in /usr/local/share/doc/direwolf, or possibly /usr/share/doc/direwolf, depending on installation location.
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Applications in this package: aclients, atest, decode_aprs, direwolf, gen_packets, ll2utm, log2gpx, text2tt, tt2text, utm2ll
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