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'm making the new site which summarize WSPR reports within past 24 hours.
You need to enter WSPR RX or TX callsign to show you the report.
If any request or comment, please ask me.


Last week I finally got around to upgrading my ham radio license from technician to general. I passed the technician exam 18 years ago when I was in middle school so passing my general exam was a goal of mine for a long time. Now that my upgrade is posted on the FCC website I thought I would celebrate so I got my Raspberry Pi setup and transmitting on 20 meters. So far with my silly wire antenna set up on my front porch, I've been heard by a guy across town and two people in Texas. That gives me a range of 14 miles or 1400 miles.

Hi there,
I changed my WSPR Software from Visual WSPR v3.7 to WSJT-X v1.9.1

During band hopping (160/80/40/30/20m) the short tx-tune (pretune) function for the next receive band works fine and tunes my ATU nicely.

However, when comming from a transmit cycle (say 40m) and hopping to a receive cycle (say 20m) no or a very short tx-tune happens!? It seems there is no power output in this case - so my ATU will not tune.

This week traveling in France and on air with Ultimate 3S and 10m long end fed antenna. Temporary call is F/PE1RTK.

HAARP (WI2XFX) WSPR plan for 02 August 2018 UTC
0010: NVIS O/X mode, 40m 7.0386 MHz
0014: NVIS O/X mode, 40m 7.0386 MHz
0018: NVIS O/X mode, 40m 7.0386 MHz
0022: NVIS O/X mode, 40m 7.0386 MHz
0026: Mag N/E, 80m 3.5926 MHz
0030: Mag N/E, 80m 3.5926
0034: Mag N/E, 40m 7.0386
0038: Mag N/E, 40m 7.0386
0042: Mag S/W, 40m 7.0386
0046: Mag S/W, 40m 7.0386
*At 30 elevation, 40m grating lobes are significant so e.g. N is ~N+S

This week i will have a RX only setup QRV band hopping on the 40-30-20-17-15-12-10-meterband. Gear is a folded dipole at 40 meters ASL in Rotterdam. RX is an Icom IC-703, USB-III from Microham and a Mac Air by Apple. Just a test to see if it fill any needs, if so maybe i wil build a permanent situation.

Have fun on WSPR the most quit mode there is hi.
Frans - PA0FBR (Frans Boot Rotterdam)

Alaska’s super-power High-Frequency Active Auroral Research Program (HAARP) transmitters in Gakona, Alaska, will take advantage of the WSPR digital protocol and the Weak Signal Propagation Reporter Network (WSPRnet) during a short experimental campaign, July 30 through August 1. University of Alaska Fairbanks (UAF) Space Physics Group researcher and HAARP Chief Scientist Chris Fallen, KL3WX, told ARRL that he’ll be conducting research into ionospheric irregularities, but hardly with a weak signal.

Another solution would be to use N0TTL's free GridTracker ( in combination with WJST-X. Both offline and online mapping is provided along with a lot of other things. GridTracker supports all modes that WJST-X does as well as interfacing to various logging programs. I use it for WSPR data analysis since it saves CSV data and plots for you in real-time. Then I can use KP4MD's excellent spreadsheet tool for mode comparisons, etc. GridTracker is a great for working in the field when you don't have internet connectivity.

I finally made my first TX in Italy. I was able to upgrade to Amateur Extra in June, so I can finally TX while I'm here for a few more months. First attempt is with WSPR to try and adjust TX audio level on my SignaLink USB into the FT-817. I'm getting a couple of bars of ALC transmitting at 1W. Using an end fed 20m sloped from my balcony to the corner of our lot in a NW direction I'm tx'ing as I/KB0VER per the CEPT and Italian rules. I'm getting into most of NE Europe including Iceland, Spain, The Canary Islands, and the East Coast of the U.S..

Hi all.
As a follow up to my WSPR receiver I have just released my standalone all band WSPR transmitter with built in GPS for the radio amateur experimenter.
It is built to be both simple to use and to be a platform to be expanded from for the experimenter.
Some quick features:
1 Standalone operation, no PC required for operation.
2 Works on any Ham band from 136kHz to 70MHz
3 Is powered from 5V.
4 Pre-built and tested except for the output Low Pass filter that needs to be built by the user.

A few hours today spotting stations on 17m. It must be 40m band sorry 73

Trying to get the QCX-30 to be seen, but need to improve my antenna.

Antenna system now has 32-10 meter radials buried about 2 inches below the surface.