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.

Site changes for new WSPR FST4W modes

Since around version 2.1.1 wsjt-x has been uploading a `mode` value that WSPRNet has not been consuming. With the advent of new FST4W quasi-beacon modes we will now consume that value.

Going forward we will process the `mode` according to 4 values:

  • "2"
  • "15" for the current WSPR modes -2 & -15
  • "5
  • "30" for the FST4W modes 300 & 1800

This change applies to the manual upload too, i.e. WSPRNet will support an 11th column `mode` which can be one of these above 4 values.

[From Admins] Map issue -- a fix of sorts

The issue with the Google Maps is related to the change Google made on July 16th, 2018 that severely curtails the free API limits. WSPRNet will be transitioning to an alternative mapping solution as soon as possible.

In the interim I have added a new field to the User Profile form for storing your own Google Maps API Key, if you want to get back to the way things were. You can get your own API Key by following the link below and I would strongly encourage you to read the Q&A down the page.

Well the pandemic has changed the world...for worse of course. But some have a lot of time to try new, affordable things. Time to take a new interest in WSPR. Lets go!

I've made a repository called wspr-cui on GitHub including:

  • wsprd code extracted and reformatted from WSJT-X 2.3.0-rc2
  • CUI event loop code for TX/RX with FT-891 and SCU-17
  • And other miscellaneous information

See for the further details.

Kenji Rikitake, JJ1BDX

John uses WSPR data to chart DX HF band openings to Australia.

View the charts at

Comments are welcome. John's contact details are on the charts.

Chances are your call sign is already in the charts :-)

73 John, VK4CT

You can view the results of the Australian 50 & 144 MHz Leaderboard Challenge on the Australian Ham Radio Discussion Forums and also on the 144 MHz WSPR and the 50 MHz WSPR Facebook group pages.

50 MHz WSPR Leaderboard on AHRDF -

Hi Im new to this digital modes end of the hobby , been licenced for almost 5 years and enjoyed radio so thought it was time to try something new , hear me on give me a call 73

WSJT site almost finished me before I began ...with the bugs. Then I somehow found WSPR 2.0 and all was lovely. I like how WSPR can help us see who can actually hear our transmissions...on digital...and, of course, who we hear. How this will help us actually make contacts in the remote areas like Alaska and Australia I am not certain. But I am going to keep working on it. I think that this WSPR is more of a tool than a communication route. I still want to talk to Ian in Australia on SSB. A learning tool. 73 From Jim KW4PW

According to the latest user manual the new FST4W modes should provide enhanced capabilities not only in the LF/MF region but also 160m. Regular activity is now well established on 136 and 474.2 using FST4W with some excellent transatlantic spots when conditions allow, so perhaps its time to see what can be achieved on 160.

There was some initial activity on 160 (and higher) when the modes first became available but appeared to die out after a few weeks.

My first time operating HF in the field was this past weekend, 12/6/2020. Daytime on 40 meters out of the back of an RV with LiFePo4 batteries. Power was easy. Without a mast though, getting the antenna high enough off the ground was impossible. I found 7.192.00 busy with a SOTA activation. Operator was N3BZ on Mt Doom, which I have no idea where that is, and without the SOTA call sign I'm left to guess that the general region is in Arizona. I was in Moab, UT. His station had to have been qrp, but came in clear at 5 and 9. I made contact with him, and it was my first hf contact.

Hi all.
I am running a Black Friday Sale fora few days so if you want to get a standalone WSPR transmitter this can be a good opportunity to do that.
Check it out at

THE SALE IS OVER, thank you to all that participated!

The WSPR server is very busy. The site is very slow.
I've started my WSPR receiver and WSPR 2.12 software for decoding, but only one by ten decoding cicle can reach WSPR server! Many spots are saving only in my PC! WSPR 2.12 write: "Could Not connect to WSPR server" e.t.c.
So many beacons are working continuously. Maybe we must limit beacons activity?

18 november 2020.
In Minsk-city(Belarus) a weather today is -3C, and first snow in this 2020 year!

TESTING NOW: Wendelantenne Helical antenna - bamboo cane 1.5m long for 40m - abt. 15m Wire - Home Brew

73 de Martin