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.

I'm going to play on 2m for a few hours. I'd be interested to know if anyone can hear me.

West Midlands, UK.

Using 10W to a collinear.

[edit 19:10 UTC]
Now band hopping 2m 144.489 -70cm 432.300

[20:10] QRT. there are three people in the world on 70cm WSPR, and I'm the only one in Europe!

if anyone fancies a try again, just let me know.
73 Mark

Hello everybody,

I have built a 250 m beverage antenna, pointing to Europe. It seems it is doing wonders on 40 metres, so I will be leaving my receiver on that band again tonight. EU signals are receivable even over an hour after local sunrise! I can see about 50 unique EU callsigns from yesterday...

It may be a good chance for you, if you are trying for a distance record using QRPp!

73, Dimitris VK2COW

I've recently constructed an 8 mtr circumference Mag Loop for use on 40-80 mtrs. It has an auto-tune system and I'm interested in seeing how it performs compared to the vertical antenna I used to use on these bands.

I have the WSPR Droid software up and running on my FT-817, using the WOLPHI-Link Interface. So far things are working fine on 20 meters at 1 Watt to a GAP Challenger vertical. Further experiments on other bands will be forthcoming.

anybody see me on 6

If there is a wooden spoon for hams I should get it :-)

I'm running wspr on the command line of my old pi with a lpf from qrp-labs. After some stellar soldering of the lpf kit I wasn't getting a connection through the circuit. Talking to Hans at qrp-labs helped me realised that I had soldered toroids with enamelled wire and not removing the enamel for the connections to the pcb. I was happy to resolve the problem by burning the enamel off the bad joints and have now been waiting for 24hrs on 20m for someone to spot me.

This post describes an addition to the WsprryPi code to allow a flashing LED:

I've been using the inexpensive teeny add-on board, TAPR 20m Rpi WSPR board, on my Raspberry Pi 2 Model B for the last four days. Works perfectly, with no problems at all. So far accumulated 665 spots detected, with the furthest being over 2090km away. Not bad for 2.5m of speaker wire running indoors the length of the attic!

Running a TAPR 20m WSPR board/shield on a RPi2. First 24hrs only had two confirmed spots detected; DK6UD and DL3GAK. Both operators from Germany.

Using freeware software called "Tiny-Locator" I was able to get a rough distance calculation of 713KM or 445 miles, from my location IO91TM and the furthest location of JO40VS.

See for more information

Activity from a sailboat 0.5w vertical loaded antenna

73's to all de Jordi.

I got my call G4BDQ in 1972 so I'm an 'old timer'. It's worse actually. I remember the crystal set I was given in about 1953. I spent ages fiddling with it trying to hear something but I was living right in the centre of Southend-on-Sea and I was about 4 so antennas were not possible. Oh well. I started building stuff rather later in the 1960s. I started with a DF33 one-valve receiver. Then transistors, OC71s, OC45 etc. came along but I didn't like them. Then I discovered JFETS. Oh yes, I liked them. Nice high-impedance things, just like valves. Fiddled around for ages.

I will launch my first WSPR balloon tommorow in Germany.
it is an modyfied Ultimate 3s Transmitter weight only 37g incl. solarcells and dipole antenna.
Here is the transmitting shedule:

2016-07-28 22:42 WB4HYY 14.097108 -21 -4 EM73 0.5 F5OIH JN06ci 7056 50

Jim - WB4HYY

tonight (26th of june) i will try my raspberry pi zero on 10m from my home qth.

Soon i will temporarely move over to Scotland and will try to set it up again for a few days.

I finally found time to connect my rig to WSPR. Not ideal as I am using a 3 el. directional antenna will use my Challenger DX sometimes in future for testing more.

Finally got the personal blog up and running @

I hope to make lots of informational videos over the coming months on WSPR, how to get started, and some common issues that I ran into getting up & running.

I've found WSPR to be a great alternative to use when I'm just so busy I don't have any desk time w/ the radio.

Want to thank all the operators out there who continue to make WSPR better everyday!