WSPR (amateur radio software)

The program is designed for sending and receiving low-power transmissions to test propagation paths on the MF and HF bands.

WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions.

[2] Stations with internet access can automatically upload their reception reports to a central database called WSPRnet, which includes a mapping facility.

Usually a WSPR station contains a computer and a transceiver, but it is also possible to build very simple beacon transmitters with little effort.

[6] The Raspberry Pi can also be used as WSPR beacon.An accurate clock is essential both for transmission and decoding of received signals.

[12] On 6 March 2024 the BBC documentary Why Planes Vanish: The Hunt for MH370 examined Godfrey's claim and reported that scientists at the University of Liverpool were undertaking an analytical study of the possibility of using WSPR technology to locate the missing aircraft.