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.

don't receive decoded texts...
need help...

vy 73 de Dieter, DL6SDI

Hi all

What i do see is that many people are running there system on demand. Or more like 24/7
I guess it's allowed in other countries???

I do know it's not allowed in the netherlands.. But even there people seems to disobey the rules.
I find this strange. Maybe i have to ask where did they get there license hihi. At the super market. :)


The internal clock on my (very old) Thinkpad laptop is very unstable - it can lose
0.3 sec every 5 minutes for about 1 hour after power-on so not much use asis for WSPR use. To keep in sync with the rest of the world and allow me to use WSPR I use (and would recommend) Karen Kenworthy's program Time Sync (at This allows me to sync up with a time server automatically as often as every 5 minutes and (differing from an installed sync service) allows me to see how far

The Mahabalipuram eye-ball meet has gained popularity among Hams over the years, conducted on 2nd Saturday of February each year, this year the event will be held on 13th February, 2010 at Tamilnadu Tourism Development Corporation Beach Resort Complex on East Coast Road.

No Delegate fee is charged.

All Hams & SWLs are invited.

Contact Person : Mr. S.K.Vittal, VU2VIT

In addition to experimenting on the 1750 M and 600 M bands, I'm also active on the Broadcast Band, DXing with hi-tech crystal sets that I have built from scratch.
Building sets of any type is fun, but there's something special about a radio that gets all of its power from the antenna its hooked to. No active devices nor any
external power from batteries or the mains.

I also like to experiment with High Voltage. I've built several Tesla coils, including my 3 KVA input coil which can emit multiple 4 foot streamers! Have a look at:

It's mounted 4-5m above ground.

Let's see what happens...

Just started with WSPR... Will try to be active on all bands for test purpose.

Check out my webpage:

Today I was listening on any band (30m, 15m and 10m) for the first time.
I only can decode on 30m some signals from DL, F, and N1..

But my antenna is not working fine, because it is experimentally lay down on the roof of my house. ;-)

On a magic night, January 20th 2010 propagation conditions were just a little better than normal and the QRP stations on 500KHz WSPR were Spotted in the Czech Republic. First G3XBM with 1mW ERP then G3ZJO with 20uW ERP were logged by OK2BVG.
For me this is a distance of 1310Km or 814miles, just out of interest I worked out the Km and Miles per Watt of ERP - 6.55 Million Km or 4.07 Million Miles.

This prompted a comment from someone that his 1924 Admiralty Radio Handbook stated that, using 1KW on 500KHz the maximum range over an ideal salt water path is 1500Km. Well then, I told you WSPR is useful.

Over the next couple of days, something must have bugged us both, without consultation, G3XBM and me went into ERP checking mode, re-calibrating our Antenna Current meters, recalculating, and computer modelling our antennas. We both use small less 'gain' yet efficient antennas.
Exact figures are difficult but we both consider we are accurate to + or - 3dB.

Here is my WSPR Countries List on 500KHz 200 micro-watts or less. England, Scotland, France, Belgium, Netherlands, Germany, Czech Republic, Norway.

The homebrew beacon of Gernot, OE1IFM, has been running here for abt 2 months with no problems.
I started with 1 Watt and later on with 0.5 Watt.
The used antennas were: wire 7 meter (non-resonant), coax-trap dipole 80/40 meter and a coax-trap dipole 30/17/12 meter.
The most spots gave the 80/40 dipole (500-1000/day) of course mostly on 80 and 40 meter.
Gernot tolled me he has new plans with the beacon.
And if that will happen, he may tell it himselve.

In January 2010 began the operation in WSPR.
I'm coding stations not audible, it leaves me impressed.
PY4LC - PY1EUN and PY2TS influenced me to use the WSPR and they have exchanged important information about it.
I operate with TS440S, antenna half-wave dipole wire 10 meters above the ground. I have used 10 watts to WSPR.
I hope to do more reports on this modality.

73 -
PY4XUI - Rafael - Passabém - MG - GH80kp

I've just received the first decoded signal with wspr with the Juma direct conversion receiver. The activity will continue more seriously.