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)

Forums: 

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.

G4VRT QTH IS IN IO93

After running the Australian 144 MHz WSPR Leaderboard Summer series over December 2019 and January 2020 (month either side of the summer solstice here), we have tallied up the results and have your overall winners.
You can find the full Top 10 results at https://www.ahrdf.net/forum/showthread.php?tid=912&pid=4016#pid4016
Or at the VHF & Above WSPR Facebook page https://www.facebook.com/groups/904392903013315/

After running the Australian 50 MHz WSPR Leaderboard Summer series over December 2019 and January 2020 (month either side of the summer solstice here), we have tallied up the results and have your overall winners.
You can find the full Top 10 results at https://www.ahrdf.net/forum/showthread.php?tid=913&pid=4017#pid4017
Or at the 50 MHz WSPR Facebook page https://www.facebook.com/groups/361822510505153/

I use an Ultimate 3 with a 10db attenuator. The transmission power is 10dBm (measured with oscilloscope to be sure).
With this power, the signal traveled 13,145 km, or 1,314,500 km per watt.

2020-02-10 20:00 HB9FGK 10.140113 -28 0 JN37kb 0.01 DP0GVN IB59ui 13145 186

WSPR is very fun !

when I try to reset the map it stays the same

Tx/Rx Daily beaming NE from Raleigh, NC using 7 element Yagi @80' and 400W between 2100z-2230z.
I am looking to see when 80M opens to Eu and trying to get a sense of how many dB of attenuation occurs before band opens.
I was hoping that WSPR may be able to look down into the noise further than SSB or CW, but am disappointed so far. A good CW ear can hear into the noise as good as WSPR seems to be able to hear into the noise and all the big guns aren't on WSPR, which limits how far down the attenuation actually goes before 2100z.

I started this WSPR journey back in June of this year when i acquired the Zachtek desktop TX from Harry. I have an interest in Low band propagation so a good easy starting point for me is 160m. I knew back then that i had to build an effective antenna system and i also knew that a good earth system was paramount to my future success.

I've been recently transmitting WSPR on an FL2000-based VGA adapter, using the osmo-fl2k library to use one as a fast DAC. I initially didn't get any spots, but after adding a small amplifier of about 100 mW, started getting spots on all bands from 160m to 20m.

Now I tried it without an amplifier into a bit longer random wire antenna, and finally got some spots "barefoot" on 40m! That's just 2 mW from the VGA port into an antenna through some low pass filtering and matching.

We are getting close to the pointy end of December now and the numbers are really stacking up in the Australian 50 MHz WSPR Leaderboard for the month of December.

Our current leaders are -

Two-Way Reports - Jim VK3II with 69

Maximum TX Distance - VK3II to JH1GYE @ 8343 km

Maximum RX Distance - JH1GYE to VK3II @ 8343 km

We are getting close to the pointy end of December now and the numbers are really stacking up in the Australian 144 MHz WSPR Leaderboard for the month of December.

Our current leaders are -

Two-Way Reports - Alan VK3DXE with 37

Maximum TX Distance - VK2DVM to VK6NI @ 3102 km

Maximum RX Distance - ZL1SIX to VK5AKK @ 3174 km

VU2UUU is QRV from ML88nk on 20m WSPR during the 26-Dec-2019 Solar Eclipse to observe the propagation conditions.

Pi esp32 guru. Shocked at my 1/5 watt tapr hat on my pi and 46’ centerfed dipole thumb tacked to the garage attic roof beam.

SDR on pi in kitchen receiving away, but only me coming in until I put it on the real dipole.

Thinking of one pi, dual service transmitting 2 min, then receiving 18min.

It is 2019 December as I post this message. Operating on 630m Band with about 1 watt EIRP. Still looking for amp to improve coverage.

Thank you all who provide your reports to wsprnet.org.

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