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 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.

What a surprise in this beginning of May! 160m dx season is still open. Each night provides some few NA dx spots; this night (09May) KD6RF, K9PAW, W9MDO, W8AC were heard in Europe between 02:20z and 04:20z.
Usually we see a quick decline at the end of april of the daily spot count (below 2000). To compare to 08 May figure: 5853 spots.
That is a unique situation in last five 160m seasons. So let us take advantage of this extended time!!
73, Patrick

Currently TX on 28mhz with either 5w or 500mw into a vertical antenna beautiful sunny day 75 deg F

I started at 20m with 5 watts. 5 watts is very much for WSPR. I now use 0.1 watts and with excellent results.

Hmmm, I'm seeing multiple decodes from SM0EPX/RX2.
Not just from me, but everyone else too.
Typically reporting everyone 3 times for the same transmission.

73 de Andy

que diferencia hay entre JT65 Y WSPR,
me pueden explicar que característica tiene
desde varios años hago JT65, este programa se pueden hacer más DX ?

desde ya gracias

julio , LU2EP

From. Buenos Aires, Argentina.


Working with a rigid dipole at 6 meters, and 20 watts.

73 de lu1eco
Eduardo Cubik

For some reason the WSPR website shows me operating from Latvia when in fact I am operating from CN87, Seattle. Both online profile and site properties profile show CN87 in the grid square field.