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 made 160m LPF for my U3 and tested it with dummy load.
In JA, WSPR freq on 160 nor 80 are off limit.

Pls ignore my post on 160m

Toru / JG1eiQ

Tried 137kHz and blew up the TX
Back receiving on 160m with double bazooka -
Working out how to do TX with SDR-Duo...

Seems to work on RX


I have 2 FT857 at 10m online...
the first with a windom Antenna dd9lh/h 28.126050
the second with a Siro Gainmaster vertical dd9lh/v 28.1260150

whats better ;-)

73 Peter

I received good report from OC, EU and NA on 30m/40m.
Mani tnx.
I hope AS activity will be improved soon.

JG1eiQ / Toru

I'm trying to compare spots from 2 SDRs on same antenna using Windows 7 PC running WSJT-X. When I attempt to launch second instance, I get error "Another instance may be running, try to remove stale lock file?". Clicking YES or RETRY just repeats it, clicking NO gives an error "Multiple instances must have unique rig names". I tried changing the CAT rig selected to NONE and get same results.
Has anyone been able to run 2 instances of this application?


John / K5XL

G7NSY will be transmitting only at 0.5W (-27dbm) on 20m via a Comet H422 Vertical V-Dipole mounted on a 20 feet mast in the next couple of weeks to see how well it performs. Transmission power is carefully calibrated at feed point of the antenna. Any questions/comments, please drop me a line. 73 de G7NSY Martin

This is absolutely incredible what I heard from these other stations with very low power:

2015-08-04 13:22 JG1EIQ 14.097112 -21 3 PM74ns 0.5 WD4ELG FM06be 11332 28

2015-08-09 08:22 VK6KOZ 14.097151 -19 0 OF77vv 0.2 WD4ELG FM06be 18506 68

2015-08-04 23:14 M0MVA 14.097138 -29 0 IO81 0.05 WD4ELG FM06be 6093 286

2015-08-08 17:24 M6EHF 14.097119 -16 0 IO94gr 0.01 WD4ELG FM06be 6100 285

I use Omnirig with WSJT-X for JT65 and JT9 and it works great with my IC-7100.

Now I would like to use WSPR-X with the same radio but WSPR-X does not have Omnirig in the setup parameters and neither does it have my radio (IC-7100).

Wonder how I can make WSPR-X talk to my radio. Rx is working fine via USB Codec.


On 28-July Dave VE3KCL launched a balloon (in fact two hydrogen-filled foil "party" balloons tied together) carrying a 39g payload. The balloon is currently cruising East across the Atlantic at just over 8,000m.

The electronics payload Dave built has a GPS, battery, solar panels, QRP Labs Si5351A Synthesiser module, and Arduino Nano (for low weight) that runs the QRP Labs Ultimate3S QRSS/WSPR transmitter firmware, but a slightly modified version.

This Microsoft Excel (2000 or later) spreadsheet has added new enhancements to Mark Hughes GM4ISM's WSPR data download spreadsheet.
To use the spreadsheet, Instructions :- Fill in blue cells and click the cogs (click away from the blue cells first). The macro will retrieve and chart up to 2500 of the most recent spots that match your criteria directly from the online database.

RaspberryPI AD9850 Excalibur home CB ants (11m)

2015-07-22 13:42 WD4ELG 14.097091 -25 -1 FM06be 0.01 W6YQ DN84ic 2166 301

Can't believe that I am being heard with that little power. Measured with LP WN-2, not guessing at 10 mW. 135,735 miles per watt.

FYI my station (70cm & 10m bands) is OFF AIR until I can fix my PC. It wont switch on again after being shut down yesterday while there was a power outage.
Possibly a power supply or switch issue, I hope to get it going again ASAP.

OK, made the 200mw transmission with a maximum distance to 18403 km I heard ZL1RS practically use a multi-dipodi under the roof, you can not get this in a system of this so far.
The next step is to reduce from 100 mW to 50 mW 0,001mw and see what happens.
10/04/2015 20:56 IK1HGI JN45jj 14.097144 -10 0 +23 0200 18319 11383 ZL1RS RF64vs
73 ik1hgi Antonio

I've been playing with a Moonraker Whizz Loop for a while. Nothing I've been doing is fully scientific but it seems that the supplied loop is too small for 20m. Not really a surprise and my results really improved when I attached a larger wire loop (approx 3m vs 1.4m supplied). But using a loop using rg58u or rg213u did not seem to improve things further. I swapped to a MFJ-932 loop tuner and I expected an improvement but experience so far suggests the Whizz Loop is better.

Up and running wspr2.12 on 40m and 20m using a recently built peaberry V2 SDR. Running 1 watt into a multiband vertical/mfj versa tuner combo. Thrilled to be heard by KK1D on 40m last night and this evening getting reports from europe on 20m. Obviously spotting here aswell with lots of reports uploaded. attaxhed is a file showing unique calls hearing me. Regards to all.


The connection happiest day of my history of Digital WSPR using the antennas under the roof for little space I have no other atternativi I could have fun just wait propagation good with power from 0,001 to 200mw
THE good connection and it was on 475.700 Khz WSPR until today I did not get dressed who had the reception in April 30, 2015 hours 18.51 who connected ?? Thanks for sharing IK1HGi
IK1HGi Antonio

Interesting waterfall of WSPR transmissions from VK3DXE