« Archives in February, 2012

New Gallery Added

Thursday, February 2, 2012 / posted in /dev/urandom / No Comments

I have added an SSTV gallery, They are just ramdom image I have recieved by just setting the radio to 14.230 and and going to bed for example and letting the software do it think

pop on over to the gallery you might find an image you sent.

[How To] Compiling WSPR under Debian testing (wheezy)

Wednesday, February 1, 2012 / posted in Amateur Radio / 2 Comments

Description:

WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions. Normal transmissions carry a station’s callsign, Maidenhead grid locator, and transmitter power in dBm. The program can decode signals with S/N as low as -28 dB in a 2500 Hz bandwidth. Stations with internet access can automatically upload their reception reports to a central database called WSPRnet, which includes a mapping facility.

Installing the required software:

# apt-get install subversion python2.7-dev python-numpy python-imaging-tk python-pmw libportaudio2 portaudio19-dev libsamplerate0-dev gfortran cl-fftw3

Getting the source:

$ svn co http://svn.berlios.de/svnroot/repos/wsjt/branches/wspr

Compiling WSPR:

$ cd wspr
$ ./configure
$ make

Optional:
you can either run WSPR from it current location or you can install it system wide by

# make install

Notes:
I got an error about port audio 19 when running configure, example:

This program needs portaudio v19 to compile.
Please use --with-portaudio-include-dir= and
 --with-portaudio-lib-dir= to set the paths.
configure: error: Please check error messages and install missing packages.

but that is easily fixed by running configure like this:

$ ./configure --with-portaudio-include-dir=/usr/include --with-portaudio-lib-dir=/usr/lib/x86_64-linux-gnu

References:
http://wsprnet.org/drupal/node/2066
http://www.physics.princeton.edu/pulsar/K1JT/devel.html

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