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.

Tomorrow, I will be making a change which will redirect all access to the wsprnet community drupal web site (this site) from to You may need to login again to create a new session. This is in preparation to move the interactive user site to another server to improve performance and separate that functionality from spot reporting.

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.

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 for you.
Check it out at

The Sale is over, thank you all.

If anyone knows a WSPR server staff member that could change my WH2XND grid location back to DM33XT it sure would be helpful!
DM33XT is approx. 20 miles due north of Phoenix AZ. map shows Im located in Tonapah AZ.
Making changes in my WSPR account does nothing.
Thank You, Ron WH2XND/NI7J.

My TAPR 20M WWSPR transmitter putting out 1/10th Watt is no longer being heard by anyone. This seems to have happened only for the past day so not sure what is wrong. I use a 20M Magloop and it is returning an SWR of 1:1 so I'm inclined to think it is not the antenna but possibly only conditions in Western Australia.
Any ideas?
Thanks, Merv VK6BMT

With the help of the site, it becomes possible not only to listen to the broadcast from remote SDR receivers, but also to process the signal on your computer.
First, you need to install a virtual audio cable on your computer, and in the browser a special extension for redirecting the audio stream to this virtual cable.

Half way around the world is about 20,000km.
My record so far is over 17,000km (40m) but I might be limited by geography - 20k is in the middle of the Atlantic.


29/08/2021 12:26 50 28 24 6m 6ele yagi on garage roof
11/09/2021 18:51 off
12/09/2021 08:22 50 28 24 21 10m 4ele yagi beam 220 deg
16/09/2021 14:32 off
16/09/2021 15:00 50 28 24 6m 6ele yagi on garage roof

All 14MHz WSPR Tx only unless stated
23/07/2021 21:19 off lightning due
24/07/2021 12:22 20m vert
26/07/2021 19:30 loop
28/07/2021 09:54 20m vert
29/07/2021 08:02 off
02/08/2021 08:20 20m vert
05/08/2021 05:42 off
20/08/2021 05:52 20m vert
20/08/2021 18:50 off
12/09/2021 08:22 7 14 17 20m vert
16/09/2021 14:32 off

The band has been open from NE Oklahoma for several days now for all digital modes. Receiving signals from all continents.

See my website at


With help from OZ2M's WSPR Hash Collision Checker, I've created a list of hash collisions that have occurred over the past month.

Also available is a collision-free hashtable.txt file which includes all transmitters active within the past month that have a unique hash value and grid.

Hi all!

Simple WSPR beacon from ready-made modules, 160/80/60/40/30/20/17/15/10/6/2m

Link to description

24/06/2021 21:04 loop
24/06/2021 21:22 20m vert
24/06/2021 21:34 loop
25/06/2021 05:59 20m vert
25/06/2021 06:26 loop
25/06/2021 12:46 20m vert
25/06/2021 13:54 loop
25/06/2021 16:14 20m vert
25/06/2021 19:50 loop
26/06/2021 15:10 20m vert
27/06/2021 13:31 loop
06/07/2021 05:50 20m vert
07/07/2021 18:10 loop
13/07/2021 13:02 20m vert