The Weak Signal Propagation Reporter Network is a group of amateur radio operators using K1JT's MEPT_JT digital mode to probe radio frequency propagation conditions using very low power (QRP/QRPp) transmissions. The software is open source, and the data collected are available to the public through this site.

For those who are using the k9an-wsprd decoder, I'm pleased to report that Joe Taylor (K1JT), creator of the WSJT and WSPR programs, has made some changes to the code which resulted in a huge speedup of the decoder. Execution times are now 4 to 8 times faster than before, depending on the noise and interference characteristics. Joe has built the new decoder into an experimental version of another of his programs, WSJT-X, and it's likely that this program will be available for WSPR use fairly soon.

Hello all wspr Op.

Thanks to much work done by people programming the RPi it is possible to get started
with WSPR in a very reasonable and inexpensive way.

Just running the RPi as a tx with its 10 mw output via a filter I have received lots of spots out to a radius of 1500 Km.

QRP MEPT on 20m, 10 minutes frames, Ultimate2 with GPS and 2.07 firmware.
Tx'ing WSPR on 14097130, then DFCW on 14000830 (followed by Hell on 14064300).
Start no earlier than 0700 UTC until no earlier than 1000 UTC.
Daniele IZ5WWB

Can anyone point me in the right direction please?

I am looking to develop, if possible, a WSPR station for use whilst operating /MM on a sailboat on an Atlantic crossing event. The potentially very low power consumption of WSPR lends itself to meet the constraints we need to apply. Specifically the event requires that no engine power is used for the whole crossing, which could be many weeks and is weather dependent, so power consumption is a critical issue.

Tnx to VK2IJC's clear instructions I got the Pi-2 whispering!
The downloading of the WSPR files and the compiling were done from the Command Line Interface.
I could not start WSPR from the CLI. When I went to the GUI, and then to the Terminal, the WSPR-program started fine.
Tnx Indrajit !

73, Robert

John K3KQV has achieved a new TransAtlantic low power record on 160m WSPR at the best time when starts the twilight (04:18z) 30mns before SR. Here is the log:

I've also received some emails, as well as noted some forum posts, regarding folks who have completed the registration forms, but are still waiting for some sort of action.

I see KF5RHI and KF5RRF, as well as some others down lower on the front page here.

I/they are also looking for someone to contact to get their ball rolling, but don't see any contact info to help them out. Help!

Thanks to VK2IJC instructions I installed linux WSPR software on my new Raspberry PI2. So got a very compact and power saving Windows PC replacement. The system is now running since one month, with full satisfaction, coupled to my homemade multiband QRP transceiver.
As USB audio I bought a SYBA C-Media CM119 interface to get full I/O. I also installed VNC server on the Raspberry so it can be left "headless" but remotely controlled when needed by any PC or smartphone.

See VK2IJC Running WSPR on a Raspberry Pi 2

Jim VE7UV has emailed me that he created an account here on WSPR but has not
received any confirmation back to get access. Can anyone point me to the correct person
to contact regarding this? 73 de ve3tkb

By Anthony F4GOH and Christophe F4GOJ.

By Anthony F4GOH and Christophe F4GOJ.


Received my WSPR and GPS kit yesterday in the mail from Japan. Will be sorting through the parts and instructions and aiming at getting it going soon. Starting band will be 30 meters.

The best nights on 160m are now in our backs, it’s time to summarize my RX Challenge season.
I logged 36 unique NA callsigns (39 in previous season) and I ‘m proud to publish the listing with power indication; 8 stations running QRPp !!


This afternoon from 13:30 until 16:30 UTC, I'll run with (10 Watts + 5 elements Yagi) to Caribbean sea direction on 50.2945 Mhz.

I cross my fingers for good luck.


EA6FG Op. Pep.

As of 04/19/2015 I will have a dedicated 100w 144Mhz and 70cm WSPR
station up and running. The 144Mhz station Yagie will be on azmuth
065 deg. and the 70cm station Yagie will be on azmuth 030 deg. I am
also monitoring for FM Broadcast signals form Spain and Portugal oo
80-90Mhz using a PCR1000 with a 8 ele. FM BCST Yagi. 73's Tom K4NAM

Charts of 80 meter and 40 meter WSPR Near Vertical Incidence Skywave (NVIS) spots SNR vs. distance
Clusters of spots in red were received during daylight hours. Those in blue during hours of darkness.
The antenna used was a thin wire 40 meter full wave horizontal loop at 6 meters above ground.