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.


We are currently working on a WSPR tracked buoy. These posts will be to share our progress with anyone, and keep a reference for us so we know what we did so we can create more.

I am a member of W1HLO, the Norwich Free Academy High School Amateur Radio club. One thing that our club likes to do is tracked beacons. We've launched three weather balloons, one of which was very successful and traveled from Norwich, CT to Canaan, VT. This year instead of a high altitude balloon we decided to build a buoy which we would release into the ocean and then track its position.

In the past I had an Elecraft K3 and was able to transmit and receive WSPR just fine! Now I have a new Elecraft K3S that I am unable to transmit a WSPR signal!
I have spoken to Elecraft and they can not help me with this problem. Can anyone help me with this problem?

Larry Putman WB3ANQ

Thank you for letting me join the community. I appreciate the opportunity to learn about WSPR and radio.
My first WSPR reception as of my acceptance:

UTC dB DT MHz Drift Call Grid dBm Dist
0302 -25 4.0 7.039994 1 KD6RF EM22 37 2780

Test for Blog :-)
Bits for G0IUW forum reply

(never used one before)

Great event this night (Feb13/14); Jim KP2XX was heard for the first time in EU:

2016-02-13 23:54 KP2XX 1.838116 -24 0 FK78ni 5 ON4LUC JO20 7026 42
2016-02-14 01:28 KP2XX 1.838117 -30 0 FK78ni 5 F59706 JN07th 6759 45
2016-02-14 02:16 KP2XX 1.838120 -26 0 FK78ni 5 MW0PPM IO83ia 6499 38

Jim heard 9 EU stations: RX3DHR, DF1VB, PA1RZ, DJ3KJ, ON4LUC, M6VPW, G0LUJ, MW0PPM, GI4OYM.

GL all, 73, Patrick

"...'My season' ends after next weekend (13/14 Feb) because the land owner needs his property, where my Beverages are located, for horses..."
Remco (PA3FYM) has announced the end of its season on 160m. I think he has marked his first and short season(Nov24/2015 -Feb14/2016) by his participation in the activity "across the pond".
Over this period he has decoded 33 North American stations with beverages for the RX Challenge.

13/02/2016 Finally persuaded the FDM-DUO (and FT-991) to work satisfactorily with WSJT-X (WSPR)so now band hopping running 5w to the Gap Titan antenna. Its been well worth the effort!

Active night on 160m : 669 dx spots "across the pond" in the data base, 38 stations in the round.
9 NA stations heard in EU: AB4DF, K1BFS, K4RCG/4, K9AN, K9PAW, KD6RF, KJ4YBS, N1NCO, W9MDO
Best Rx stn: KK1D(14EU), K4RCG/4(8EU), F59706(8NA), G8DYK(6NA), PA0O(6NA), G0KTN(5NA), G8LCO(5NA), ON4LUC(5NA)
To note a new one heard for me (K1BFS) and a new count for my NA rx Challenge: 47
GL all, 73, Patrick

Whilst WSJT-X 1.60 works very well with CAT control, version 1.7 can have grave problems. The development of the WSPR Challenge ( has drawn attention to the severe database corruption that 1.7 can produce when the CAT looses sync with WSJT-x. You only have to look at the results of the band rankings to see that there are very odd scores that are due to cross band contamination.

Built Hans Summers Ultimate 3S kit over the Winter and got my first spots on 40m and 15m with an Alexloop setup on a tripod in my Kitchen. I live in an Urban condo, and the ability to get a signal out of my kitchen, through the windows and down to Texas just goes to show there's alot of opportunities to enjoy this hobby even with the most limited power and limited antenna siting constraints!

SoftRock Ensemble RXTX Kit Built for (40/30/20 Meters)

The first testng done with the unit after building and configuring the software was with WSPR (Weak Signal Propagation Reporter)

If you’re looking for a kit that will help you learn about SDR (Software Defibed Radio) and possibly up for a challenge with SMT components and IC’s, winding your own inductors and don’t mind using a magnifier to see with! Then I would recommend this as a neat project and a nice little receiver or QRP transceiver.

I test today on 160m with 10mw HF at a 6 m long vertical antenna.

73 de DO5JWA Jan

Currently have a Raspberry PI 2 (Jessie) running WSJT-X v1.7(dev)
with CAT control of my FT-847
listening and reporting on 20m during the day and 40m/80m at night.
The antenna is a sloping dipole in roof-space for 20m.

Building a Sky-Pi by (RadWav) transmitter for 40m so need to put together an antenna for 40m soon.

IMHO server is now running very well.
It is fun agn watching WSPR reports.
Sometimes a DX cluster like interface would be nice...


WSPR is so cool that it is (but is becoming "was") my favorite mode.

Real propagation science is done, real antenna measurements are made. A quick place to look to see if a path is open to a DX location. A great way for city-bound or HOA-limited hams to see real world-wide contacts.

And, it is (or was) a nice place to recommend for newb's as well as a place to re-invigorate interest for the old-school ham.


Ken here from Hillsboro, Oregon.

I'm still fairly new to Amateur Radio and related web systems.
I'll be reading up, but any suggestions are welcome.

This is an inexpensive project based around a partially built $21 SoftRock Lite II receiver and an $8 Si5351A module. The transceiver provides single band operation between 630 and 10 meters. There are many transceivers in the marketplace that provide good performance at a reasonable cost. However, I enjoy building and experimenting, so I documented this project to share with those who have similar interests. Additional information is located at:

Gene W3PM