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.

Many of you may wonder what the huge amount of data available in the WSPR-DB may be used for...
Just for the newcomers, I am spotting here again some work I have done using the WSPR-data. (just updated)
You may find ideas for you own work. Please spot any propagation, antenna or other related study you may have done using WSPR.

Thanks and best regards - Patrick

My AVG anti-virus has started reporting that Dimension4 is infected with SHeur2.AZMQ Trojan Horse.

The following notice appears on the Thinking Man Software website:

AVG Antivirus recently updated their software to search for the SHeur2.AZMQ Trojan Horse. This recent AVG Antivirus update INCORRECTLY identifies Dimension 4 as being infected with this new Trojan Horse.

In close cooperation between the DAGOE Foundation, Mercy Ships and 5 Dutch radio amateurs, a new DX-pedition is on its way.

If everything goes according to plan the team foresees a visit to Benin from October 7th until October 30th.

The team expects to be on air from October 10th-27th and will also participate in the CQWW SSB 2009.

I am in contact with the DX-pedition and they will take one of my beacons to Benin.
So if it works out TY1MS will be active in WSPR!

In earlier days while being new to operating it was fully satisfactory
to make the contact, log it, and move to the next one. Only much later
it became more interesting to search for what is behind it, what sort of
conditions, and to quantify signals or levels as a reality check for
the used technology. For some years I have advocated that a single
antenna is not enough on any band if one wants to optimize the use
of all possible propagation conditions. Actually, even two antennas

Hi All !

Here a picture of my 80cm long MICROVERT Antenna 73m AGL.
Thats my 30m Antenna I use since I started WSPR.
The black line points to my MICROVERT.

peter dl6nl

This is the small antennas i am using at my "town"-QTH.
From top down....
2m+,7m HB9CV (2 el,)
20 m dipol (2*1,3m with coils)
30 m dipol (2*0,5m with coils)
Rig is FT-817
Interface RigExpert

I and many others believe in keeping an interface as simple as possible.

Makes things easy to repair, no RigBlasters here, or Signalinks.

The attached picture shows the antennas in use at G3XBM.

Although I sometimes decode OK2SAM's WSPR signal, it always need to be strong...
On the attached file, OK2SAM signal is around -10 but getting no decoding. On the other hand the upper signal at 11:40z got decoded at -26 (the stronger one in the same period is 7L4IOU at -10.)
OK2SAM, if you ever read this post, please explain what kind of settings you are using to produce such a signal, resisting to WSPR decoder ! (You may also want to fix it !)


Back at the Home QTH, my MEPT is on 28.125995MHz. Hopefully near enough to the WSPR slot to produce some Spots.

Power out is 350mW Antenna 6m Vertical at ground level with radials.

One more interesting thing found when exploring duplicated spots.

I can understand that sometimes noise can be interpreted as a message:

090812 1750 1 -33 1.5 7.040173 8IT/6Q9WVG 8 -1 18339 19

I found my TenTec RX320D to be a wonderful WSPR receiver. I have to set a slight offset of 27 Hz. No more drift seen after switching on than with the TS690s. It is a pity that it has no transmitter ...

I often hear a VK7 on 40m ssb in the mornings here in the UK.
Very strong.

So I'm gonna leave 40m running over night until about 0600Z and see what happens.

Also...encouraged by my 80m reports, I might try 160m over the weekend too.

- Andy -

I shall be testing a 2.5m square wire loop tonight.
It is indoors, fixed to the bedroom wall.
Obviously it's a very poor 80m antenna.
Only 5 watts will be used.

My internet connection will have to go to sleep, so I will
post logs tomorrow, and make a blog entry of stations received.

Unfortunatly I have big QRM on rx :-(

73 de Andy G0FTD