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.

The setup:
Raspberry Pi model B
20 meter dipole, 20 feet off the ground, broadside faces north, south.
1:1 current balun
Linux: Jessie, running a CRON script and x11VNC and SSH, since it's headless.
My setup is still working fine. Here, MW0BYS in Wales hears my 20 meter beacon. A slight misconfiguration in my parameter file incorrectly lists my power, it is under a watt.
Since then, France also heard the beacon.
This was a great learning experience for me as I was expanding my Linux capabilities as well.

Great reach for 50 mW - running via attic Dipole V and LDG tuner. Amazing results.

I find it impressive that from my home in suburban Adelaide, Australia, a signal sent with just 2W of power from Illinois, USA (K9AN), can be plucked out of the air.

... or 5W from London, England (G8VDQ),
... or 0.2W from Darwin, Australia (VK8ZI).

Note that the VK3TWO contact may be a bad decode (2723km from 0.1W). It decoded with grid RG30 however QF22 is listed as VK3TWO’s QTH on

Has anyone put together a Raspberry PI that works with WSPR 2.21? Would really like to know how.

Tnx de N3EDS, Jeff

From FB:

"I am finding I may be in some sort of login limbo on the website. My email & call are registered but I cant login. When I try a lost password procedure, I am told my email & call are not registered. So I try to register, only to be told my email & call are registered already. Could you connect me to someone that could help me out please? Thanks W6ORV"

Am trying this for the first time this week, and seeing some great stations, I am now pushing just 10 watts. I tried it at 20 but decided to drop it even more. I mentioned this program to myolder brother who is also licensed and will see if he gets involved soon. So far my screen see's this and I hope it will tell me more on those heard and seen.

Today I tried logging in to my WSPR account from the VE7UBC clubstation, where I am visiting old friends. Password refused !! Retried several times. Then the login prototcol freezes my account and I am locked out.

I was able to recover OK, by using the forgotten-password protocol. But only after waiting a few hours.

Someone had switched the keyboard to Canadian-French. My password has high-security non-alphameric symbols that don't map to the usual keytops in the Can-FR map.

I am using this antenna from 60mt to 20mt bands

Currently I am running WSPR on a Raspberry Pi 1B and using the Tucson Amateur Packet Radio 20M WSPR Board. Output from the Board goes to an attenuator to reduce the output to approx. 50 milli watts.
The antenna it is connected to is a Small Dipole via a MFJ-971 QRP tuner. So far only been spotted by local station within 180 miles. The Setup at this stage is in a small cardboard box, and

DF1VB from Dortmund/Germany has been coming through to VK3 with exceptional consistency over the past days. This station is ideal for propagation studies, especially on 30m. Band opening and max/min propagation times can clearly be derived from the reception data.
The attached image shows how DF1VB's signal still persists when all other stations have disappeared.

I've just been reading the latest IARU R1 Newsletter.

It is available here -

Downloads it and it says that (about 80% through the document) that there is a recommendation
to "remove all dedicated WSPR spot frequencies and footnotes from the VHF managers handbook".

Have these guys at the IARU got a serious mental problem ?

Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az
2016-05-17 11:14 W8KV 10.140302 -31 1 EN80 0.01 ZL1RS RF64vs 13462 248

Today ZL1RS picked up my signal, this is the farthest a WSPR signal on mine has reached thus far.

Previous equipment was a HackRF into a MFJ tuner, and a simple homemade filter, mostly on 10 meters, and the greatest distance then was to Brazil or Italy.

The equipment today is a Raspberry Pi running WsprryPi into a QRP Labs 30 meter filter, into an MFJ tuner.

Some field day activity now in KP41DB with FT-817 (1 Watts) and quit an old portable whip: MFJ-1621.
Trying this time just 30 meters band.

73/ ARi/ OH5KUY

Just looking through my log for 40M and surprised to see F6BAZ long path -20dB with 0.2W. Quite a good result.