mirror of https://github.com/wb2osz/direwolf.git
65 lines
2.5 KiB
Markdown
65 lines
2.5 KiB
Markdown
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# Documentation for Dire Wolf #
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## Essential Reading ##
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- [User Guide](User-Guide.pdf)
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This is your primary source of information about installation, operation, and configuration.
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- [Raspberry Pi APRS](Raspberry-Pi-APRS.pdf)
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The Raspberry Pi has some special considerations that
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make it different from other generic Linux systems.
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Start here if using the Raspberry Pi, Beaglebone Black, cubieboard2, or similar single board computers.
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## Application Notes ##
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These dive into more detail for specialized topics or typical usage scenarios.
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- [APRStt Implementation Notes](APRStt-Implementation-Notes.pdf)
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Very few hams have portable equipment for APRS but nearly everyone has a handheld radio that can send DTMF tones. APRStt allows a user, equipped with only DTMF (commonly known as Touch Tone) generation capability, to enter information into the global APRS data network.
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This document explains how the APRStt concept was implemented in the Dire Wolf application.
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- [APRStt Interface for SARTrack](APRStt-Interface-for-SARTrack.pdf)
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This example illustrates how APRStt can be integrated with other applications such as SARTrack, APRSISCE/32, YAAC, or Xastir.
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- [Raspberry Pi SDR IGate](Raspberry-Pi-SDR-IGate.pdf)
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It's easy to build a receive-only APRS Internet Gateway (IGate) with only a Raspberry Pi and a software defined radio (RTL-SDR) dongle. Here’s how.
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- [APRS Telemetry Toolkit](APRS-Telemetry-Toolkit.pdf)
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Describes scripts and methods to generate telemetry.
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Includes a complete example of attaching an analog to
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digital converter to a Raspberry Pi and transmitting
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a measured voltage.
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## Miscellaneous ##
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- [A Better APRS Packet Demodulator, part 1, 1200 baud](A-Better-APRS-Packet-Demodulator-Part-1-1200-baud.pdf)
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Sometimes it's a little mystifying why an
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APRS / AX.25 Packet TNC will decode some signals
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and not others. A weak signal, buried in static,
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might be fine while a nice strong clean sounding
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signal is not decoded. Here we will take a brief
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look at what could cause this perplexing situation
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and a couple things that can be done about it.
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- [A Better APRS Packet Demodulator, part 2, 9600 baud](A-Better-APRS-Packet-Demodulator-Part-2-9600-baud.pdf)
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In the first part of this series we discussed 1200 baud audio frequency shift keying (AFSK). The mismatch
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between FM transmitter pre-emphasis and the
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receiver de-emphasis will
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cause the amplitudes of the two tones to be different.
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This makes it more difficult to demodulate them accurately.
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9600 baud operation is an entirely different animal. ...
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