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APRS On Demand service: an interactive information system based on the APRS protocol


A set of four short command-line programs to control the Kenwood TM-D710 transceiver:
- check that the transceiver is alive or read the firmware version;
- tune a specified frequency;
- tune a specified channel;
- configure the TNC (Terminal Node Controller).



A program to monitor for APRS (Automatic Packet Reporting System) emergency packets: ax_emergency_listen-1.3.3.tar.bz2 + signature.



Latest release for soundmodem (a Usermode Soundcard Modem driver) by Thomas Sailer: soundmodem 0.18.

Set of two patches to use soundmodem for AFSK at slow bitrates, such as for 300 baud HF operation (apply them in the listed order):
- patch to use the proper samplerate for AFSK;
- patch to increase the receive filter parameters.

Patch that might be required to compile soundmodem with recent versions of gcc:
- patch to remove misplaced extern qualifier.

Patch that might be needed to compile soundmodem on 64-bit platforms:
- patch to remove 32-bit assembly instructions to check for SIMD extensions at run-time.



Link to the gMFSK homepage: a Gnome Multimode HF Terminal (by Tomi Manninen OH2BNS).

A patch for gMFSK that might be useful during the calibration of crystal oscillators:
- patch to extend the waterfall spectrum analyzer magnification up to 32 times.

A set of patches that might be needed to compile gMFSK with recent versions of gcc:
- patch to prevent inclusion of a header file which contains duplicate function definitions;
- patch to fix further issues with header files;
- patch to prevent compile errors in the Olivia C++ code.



Link to the satellite tracking software by John A. Magliacane KD2BD: predict.

A simple patch allows to use a larger database of satellites.



Two short programs to calculate the rise and set times for the Sun and the Moon respectively.




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