DescriptionWSPR 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. To see a live version of the map pictured at top right, click here.
introduces a number of new features including a
user-friendly setup screen with drop-down selection of
audio devices and rig-control parameters, support for
compound callsigns, fine selection of the fractional time
for transmitting, and a Tune
button. A new Advanced setup screen offers
optional CW identification and tools for frequency
calibration and automated frequency corrections for your
radio. Full details are presented in the WSPR 2.0 User's Guide,
which you will need to read in order to use the new
features. For the first time, a binary installation
package is made available for Ubuntu Linux (versions 8.10
and later), Debian 5.03, and other Debian-based 32-bit
WSPR 2.1 includes
A brief online User's Guide for WSPR-X is posted at
http://www.physics.princeton.edu/pulsar/K1JT/WSPR-X_Users_Guide.pdf , and the Windows installation file is posted at
WSPR-X does not presently do “band hopping” and does not support I/Q audio for use with direct conversion receivers and transceivers. Otherwise most familiar WSPR features are present and working well.
For software enthusiasts: Unlike older versions of WSPR, the user interface of WSPR-X is written in C++ and uses the Qt programming framework. My expectation is that this shift will make for easier development and program maintenance in the future. A click-to-install package is presently available only for Windows. The program can also be compiled for Linux and OS X, but at present you're on your own for that task. Source code for WSPR-X is available from the open-source SVN repository at SourceForge. Anonymous checkout of the full WSPR-X source code can be accomplished with the command
User comments, suggestions, and bug reports on WSPR-X will be very welcome!