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.

Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az
2016-03-30 15:50 VK0EK 7.040138 -27 0 MD66 0.2 UA1ASB KP51ba 13286 338

because my receiver in Curacao does not receive my signals,
i try to build a lineair amplifier with some more power.
This days i do the first exeperiments.
The antenna is a 20m. vertical with 20 m. long open feeding line.
(Like the old fashion Zepp antenna)

I find out that 4 mW on 30 meter will give less reports, in my case, and up till 1800 km.
With 17 mW it goes to 17000 km (VK)
So now I go to 10 mW with my Raspberry Pi on 30 meter into a 10 meter vertical.
' 73 and happy eastern
Peter , PE1DCD

The recent SSB Contest made me realize that fewer syllables are better, so I changed my call. It's the end of an era.

73 & happy WSPRing,

Gary (ex-KC1AWS)

It look like that my vertical works much better than my horizontal wire.
Becouse of that I now make 6 db less power.
So for now: Raspberrry Pi with 4 mW in a 10 meter long vertical on 30 meter.
' 73 and a nice Eastern

In previous post you can see that I was using a wireantenna of 10 meter long horizontal to the backyard.
Now I use a vertical of 10 meter with a CG-3000 antennatuner in the backyard.
The rest, a Raspberry Pi (2B), the BPF and the output of 17 mW is the same.
Lets see if I can find the difference.
' 73
Peter , PE1DCD

Today is my first day on WSPR - trying 10.1387 plus audio.
Anyone see me? Thanks - EL98is
in Florida, USA

I am now on wspr 30,20,17,12,10 metres with LF and 50MHz being added soon
Also QRSS on 30m
Max power is 1 watt

Sinds a week I am WhiSPeRing with a Raspberry Pi(B2) on 30 meter.
To clean up the signal I found a nice BandPassFilter at:
The power after the BPF is 17 mW and that goes to a wireantenna of abt. 10 meter long.
The wire start at a window on my roof (abt. 7 meter) and goes to the back of my garden (abt. 3 meter).
At the feedpoint there is a sort of impedancetransformer.
There is no rocket science in this setup.

Rigid dipole nort South, 2w, 6m elev

Hi all,

Dave VE3KCL's Balloon S-7 with QRP Labs kits and firmware onboard for tracking, was launched 11-Mar-2016 13:00 UT. It is now mid-Atlantic, making very fast progress East.

More details and live map tracking:

Completed, thanks to nice HFBEACON library from F4GOJ, was using AD9850 DDS, additionally added DS1370 clock for WSPR time sync, on very short mobile vertical and output power less than 1W was heard across Europe on 20m.. -- 73, Alex.