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.

In case it's helpful to anyone, here are the settings that I find work with my Yaesu FT-891 and a G4ZLP / ZLP Electronics Data-Link USB Sound Card. I would think that this will be much the same for other USB sound cards, such as the ZLP Mini-ProSC, ZLP Pro3 and SignaLink USB.

The main puzzle that I had was finding the correct RX and TX BFO settings. This is 1500Hz. Data Mode is OTHERS Data PTT will be DAKY and as the sound card is connected to the rear of the radio, Data In Select is REAR. Data BFO is USB (upper side band). Power as low as possible - 5 watts.

Space Weather Message Code: ALTK07
Serial Number: 113
Issue Time: 2018 Aug 26 0739 UTC

ALERT: Geomagnetic K-index of 7
Threshold Reached: 2018 Aug 26 0738 UTC
Synoptic Period: 0600-0900 UTC

Active Warning: Yes
NOAA Scale: G3 - Strong

2018-08-23 01:36 D13PZE 0.475755 -23 0 JF62 +40 10.000 N2LO FN20rg 12404 7707

Actually, it was +40dBm which is 10 Watts!

D13PZE 0.475755 -23 0 JF62

anyone have info on D13PZE?

Read my blog entry "Swedish icebreaker Oden and the mystery of SA2LLL/63" on

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.