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Weak Signal Propagation Reporter

WSPR

WSPR (pronounced "whisper") stands for "Weak Signal Propagation Reporter". It is a computer program used for weak-signalradio communication between amateur radio operators. The program was initially written by Joe Taylor, K1JT, but is now open source and is developed by a small team. 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. 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.

 

This mode can be generated and decooded by a variety of free software on the internet.

WIRE81.GIF

Waterfall

This is how WSPR looks in your waterfall, very narrowbanded so lots of stations can use the frequency

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Software

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.

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Usefull links

Download page to the software:

 

Link to the Live Map:

My Setup

WSPR can be operated in several ways, It can be done with the above mentioned software.

But even nicer there are a few kits to build a complete beacon yourself, I build a kit myself The QRP Labs U3 kit.

More info on my projects page.

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Usefull links

Link to my Project Page:

 

Link to QRP Labs:

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