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.

try my personal homepage,


I'm please to announce that tonight I heard a new NA station; AE4VJ (Brad). With this last one I reach with several months in advance my final score of the previous season on 160m wspr: 98 UNIQUE NA station heard.
But I'm not alone improving results and the season is not over. I publish the current season TOP score (Jul2017-fev2018). I note especially the position of Bob (K4RCG) who improves season after season his antenna system with obstinacy and efficiency.

Just finished up a QCX 40m from, great kit great radio!.
Just booted up the WSPR mode and hit Germany! 3.8w out Homebrew Windom 40m

Starting with the 0314 beacon, W0BM's antenna is at 135 Degrees. The azimuth in the last week or two has been 45 Degrees. Rig is 40 meter QCX, in beacon mode, running 1.5 Watt or so. Antenna is a Steppir 40 meter trombone element at 17 meters. (part of a 3 el Steppir). QCX is GPS Disciplined. This has been fascinating, and let the experiments begin! 73,
Pat W0BM

Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az
2018-02-22 19:46 VK7MO 144.490558 -25 0 QE37pa 50 VK2DVM QF56og 1083 20
2018-02-22 17:28 VK7MO 144.490556 -23 0 QE37pa 50 VK2DVM QF56og 1083 20
2018-02-20 20:28 VK7MO 144.490557 -1 0 QE37pa 100 VK2DVM QF56og 1083 20
2018-02-21 04:12 VK7MO 144.490544 -2 0 QE37pa 100 VK2DVM QF56og 1083 20
2018-02-22 19:36 VK7MO 144.490558 -20 0 QE37pa 50 VK2DVM QF56og 1083 20

This is my first time trying this out. I am new to digital all together.

Hello everybody,
if I receive my own signal I hear much hum on it. But I use a very good filtered power supply.

Sorry, all spots from PA7MDJ on 2018/02/17 between 1516 and 1518 UTC have the wrong band reported. The band reported is 630m, it should have been 30m.


Estación Base HF/VHF/UHF, Backup Bateria, Panel Solar. EndFed 9:1,
TS-480sat with antenna 5BTV, and FT-857D con Antena Atas120A, Dipolo Rigido 28 Mhz

I launched WSPR 2.12 on a Pentium 3 1200 MHz PC.
But it can't work normally.
The error in screenshot
What's it?

One of the interesting things you can calulate from WSPR spots recorded on the WSPRnet web sites is the number of kilometers that each milli watt of power from your transmitter covers.
Using my WSPRLite Classic Transmitter running 200 milli watts into an OCF dipole I made the following contacts.

12-Feb-2018 at 12:28 UTC to K9AN at EN50wc total kilometers 17660.

A calculation to K9AN shows that for each 1 milliwatt of signal the Transmitter covers a distance 88.30 kilometers.

9-Feb-2018 at 20.50 UTC to F5OIH at JN06ci total kilometers 14419

My personal WSPR setup. Raspberry Pi 1 with filters for 80m, 40m, 30m, 20m and 17m. Output is for now 10 mW, but I build one simple amplifier about 200mW (almost finnished).
Till now all working 24 hours on day in a FD4 antenna which is for now very very low over ground.

Wanted to create a single band Raspberry Pi SUPER QRP transmitter.

Bought and built one of these:

Installed it on a R-Pi 3 i had sitting around from adafruit.

Using Jessie Lite as an OS on the RPi i used this software:

Found this site had an archive of historical WSPR data going back to 2008 in CSV format. Since i'm a DBA with backup skill set in BI i wanted to load all historical data into a SQL Server database.

Needed a way to automate download .zip files and found a version of wget that works on Windows.

By using SQL Server Integration Service I created a process to download the current and 23 previous months of .zip files from site, perform an extract and load the CSV data into a table.

Stand alone WSPR 200 mw Beacon from Far North KP69.