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.

Please note 80m frequency change to 3.5686 MHz (USB)


Please note, the WSPRNet site has been updated to reflect the change to the 80m WSPR frequency which is now 3.568600 MHz USB.

Thank you to K1JT and G4ZFQ for pointing this out.

73 Gary W1GJM

[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.

Icom 7300, attic dipole - transmit, amplified loop - receive

МАЯК Р=1ват. (WSPR-2) Маяк сделан на ARDUINO -NANO и запрограммирован на основе информации с сайта прошивка для моего позывного сделана US3MW. Мощность увеличина до 1вата и все диапазоны с автоматическим переходом на каждый диапазон по кругу. можно отключить любой диапазон .Работает на длинный провод 65метрров.

There's a bit of remodeling and reorganization going on, and I need to relocate the Raspberry Pi and co-ax that runs the beacon. Will be QRT today. Might off be a day.
Carry on,

PS. Back on line, and with 70 feet less co-ax, too. Still, a hamster could generate more than 10 milliwatts, but it's amazing what WSPR can do.


Ok, finally built the club project kit. First tried an untuned long wire. Currently using my dipole so will leave it running over night.

I think got call sign word set. What equipment do I need to Hook to my computer. So I can get going?
Or do I have the wrong settings.?

I am in the process of seting up my station as well as QRZ and eQSL accounts. I am absorbed in various experiments. Recently was climbing trees with my antennas.
Still waiting for SignaLink USB and some cables. So far my phone squeaks into microphone of Yaesu FT-818. The reception is on other bands with a separate antennas and SDRplay connected to the computer.
At the rural location of my station there is extremelly weak internet connection, hence some actions must wait. Everybody who is waiting for eqsl please forgive. I will send it a bit later. now fine. The trick: add your user to the group "dialout". Antenna is still the selfmade "Springy" indoor antenna as mentioned before...

We are very excited to announce the RFzero - a multipurpose Arduino RF platform that can do WSPR from 100 kHz to 1 GHz in a cost effective way and at the same time with a responsible RF spectrum and stability performance.

For more information please visit

You can use one of the dozen example programs or tweak them to fit your specific need for WSPR but also for CW, FT8, JT9 or PI4. Soon we will also have an example program for a QO-100 dual LO solution.

Now running DX Commander. Still working on adding 17M element and need to tune up 20 meters. 40, 15 and 30 are running well.

I built an endfeeded halfwave mono-band indoor antenna by uing a childrens toy from the 70ths: springy, the stair walking spring (picture). TRX is a qcx kit from Hans G0UPL, 5W. Got Iceland and Gran Canaria tonight :-D

Hope to see you, 73 de Tommes DD1TOM