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.

Testing 40 meters bazooka antenna with rtl_WSPR daemon in Raspberry Pi

More info in:

Thanks to Patrick, ON4CDJ for the information via Twitter.

As noted over in the WSPRNET forums, loading the map display has been
throwing up occasional errors, usually moaning about Javascript.

There is also talk that Google are trying to promote a charging
scheme for access to the map.

Just curious as to why wsprnet needs to access Google maps at all ?

Surely a generic world map jpg could be used ?

73 de Andy

New test in salt water from my sailboat. EA3FLN /mm wspr
Ultimate 3S TXCO 30m 1x bs170 @5v + QLG1 gps
Antenna is the back stay 12m lenght , UNUN 1: 9 and Z match antenna coupling. Power is about 235 mw on 30 meters.
Hope to see your spots.



Again, yes again,seems no limit for 160m activity "across the pond": Number of Unique dx spot: 286 (new all time record). The low noise level of the band is a key factor.
In the round 42 EU stns and 24 NA stns.
Best NA rx stns: KK1D(15EU), K4RCG(10EU), N2NOM/L(9EU), K1IR(9EU), WA9WTK(EU), W8AC(8EU)
Best EU rx stns: F59706(15NA), EA1FAQ(13NA), DK6UG(12NA), PA3FYM(12NA), G8DYK(11NA)
Best NA/EU dx spot: 2016-12-10 05:46 SV8CS 1.838122 -18 0 KM07js 5 KD6RF EM22 9763 311

I have been playing with an arduino, gps pcb, si5351 and a tx running 1 watt from two BS170's.

Attached photo shows MEPT detail.

Works well on QRSS and now I have programed to run WSPR as well.

I will be posting a web site soon where all my design and code will be available.

Antenna is a multiband vertical and I am running WSPR on 7Mhz at the moment.

Hope to see your spots.



10 has been mouse-quiet these many past weekends. But today 10 opened up late in the day and here's what was decoded at my QTH in Philadelphia.

Bands - 80/40/30/20/15/10m
Pwr - 0,2w
Link -

Spent some time setting up an old V2 Raspberry Pi and another half an hour soldering a LPF together.

Pleasantly surprised to find four stations picking up the nominal 10mW transmission, first Tx window.

40m version to come.

I have had the WSPR software for 6 years but never tried it. Last night started transmitting and receiving WSPR using the JT-X set up I have used for same period of time. Fascinating mode! My antenna is a "T" loaded vertical with a vertical section of 40 feet and legs at the top of 88 feet each.

I'm plugging away unsuccessfully trying to get spots from my old raspberry pi but still enjoying the journey.

I think I made the mistake of jumping in at the deep end. I was trying wspr on my raspberry pi before I ever had a radio or had a good grasp on antennas.
Since the summer I have become the proud owner of an old Kenwood TS-820s which has taught me a lot. I now know how to replace the fuse in a TS-820s
and that the valves in these radios weren't designed for digimodes :-)

Number of Unique dx spot: 272 (new record). In the round 56 EU stns and 27 NA stns.
Best NA rx stns: KK1D(13EU), WI1R(13EU), K4RCG(9EU), W8AC(9EU), K3RWR(7EU), K9AN(6EU)
Best EU rx stns: EA1FAQ(12NA), F59706(12NA), GM4SFW(11NA), DL3GAK(10NA), MW0PPM(10NA), DK6UG(9NA)
Best NA/EU dx spot: 2016-12-08 05:36 KD6RF 1.838123 -29 0 EM22la 5 SV8CS KM07js 9799 45
To note my new season count of my RX Challenge of NA stations heard: 47(+5)
A very magical propagation..... to be continue....
Good dx all, 73, Patrick

Event of the night; Alejandro heard near SR by Bjorn SM0MDG and Rolf LA2XPA
2016-12-07 06:34 LU8YD 1.838100 -27 0 FF51xb 5 SM0MDG JO99 13497 36
2016-12-07 07:42 LU8YD 1.838100 -23 0 FF51xb 5 LA2XPA JP33wi 13174 30
Congrats to all, 73

It's now trivial to write "new record"; night after night 160m stations generate huge number of NA/EU spots "across the pond"; widely above 1000 dxspots.
A significant figure is the number of UNIQUE dx spot: 221, to compare to previous top Nov23: 122. In the round 53 EU stations and 18 NA stations.
Best NA rx stations: W1IR(12EU), KK1D(10EU), W8AC(8EU), K3RWR(8EU), K9AN(6EU), K4RCG(5EU)
Best EU rx stations: F59706(8NA), MW0PPM(6NA), GM4SLW(6NA), ON4LUC(6NA), PA3FYM(6NA)
To note first NA stations heard by Anthonie NL8992 (K3RWR, W1IR, W8AC).

Great work from FY5KE this night on 160. Hope more to come...
73, Patrick, F59706