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'll test 2m WSPR today.(March 2nd around 3:00 to 6:00z)
Please watch and give me reports.
Antenna direction is south.Power is +40dBm and frequency is 144.490530MHz.


I'll test 2m WSPR tomorrow.(March 1st around 3:00 to 6:00z)
Please watch and give me reports.
Antenna direction is south.Power is +40dBm and frequency is 144.490530MHz.


Sorry, canceled due to the rain.
I can't mount fixed preamplifier to the tower.


Hello all,

The last 2 weeks I was working on my Ultimate3 QRSS kit and have to say : I love it.
It's up and running on 10, 20 and 40m and the relay board is doing a fine job.
The thrill of building it, getting the GPS working and you're first DX report . . . price less.

On my homepage I devoted a entire page to the building of my Ultimate 3 with info and photo's.

Check out :

Moved over to 10 meters this afternoon. Feeding the 40 delta loop. Hopefully, I will not get arrested.

The U3 did not react well to 12V operation, silly me! Now I have repalced the PIC and the DDS and it works again and I run the unit through a 9-36V down to 5V isolated converter. No earthloop difficulties!
Will continue making improvements.

Moving down the power to around 65mW. Well, truth be told - < 70mW, but more than 50mW.

Trying some WSPR with 10mW tonight on 80m. TRX=FT817 Ant=80m square horizontal loop 7m agl.
My blog:

73, Bas

I've dropped the power from 250 to 125 mW. Still operating off the 30 meter delta loop.

Back on WSPR this morning with WPSR-X. Running 250 mW in to the 30 meter delta loop. I like the interface on WPSR-X. Being a JT65A/JT9 operator, WSPR-X provides a very familiar interface.

WSPR-15 has spark my interest. Anyone using WSPR-15 on 160 meters? Or are there a few daring souls out there who will give it a go in HF?

We have had a heavy (record high about 70cm) snow this morning,
but condition on 6m was very good.
I've got 104spots from 14stations in VK.
Condition lasted incredible over 5hours.
Is this propagation only TEP? 
I can't see the Es layer over Australian continent.


Heard VK1KF at 2146 UTC (02/09/2014)... Amazing! Don't hear many VK's at
this location! Pretty good mileage for 5 watts!

Will be visiting my daughter in Townsville, Queensland in June - looking
forward to the trip!


In the last days I was dropping my power from 200 mW (QRO) to 100 mW to 50 mW to 10 mW and to 1 mW. And my score km/Watt was continuously rising. When I wanted to shut down the station (my Ultimate3) from Hans Summers another OM said: "Why don't you turn down the power even lower?" I answered: "I could not code it in my report. The bottom line is 0 dB."

What the hack: I switched with my the step attenuator another 3 dBm and had now 26 dBm that's 0.5 mW.

It took a while, but then I got a report and it was over 912.000 km per Watt.

Since the beginning of the winter I'm mostly focused on 160m. With the arrival of my TS590 I wanted to verify its ability on MF instead of my Drake.
That first night of this winter was a success with 47 rx dx spots for 5 unique NA calls:
2014-02-08 03:32 WG2XIQ 0.475666 -28 0 EM12mp 1 F59706 JN07th 7991
2014-02-08 01:06 WG2XJM 0.475750 -26 0 EN91wr 5 F59706 JN07th 6206
2014-02-07 23:16 WG2XKA 0.475723 -27 0 FN33ir 1 F59706 JN07th 5619


In CQ Magazine current issue, you can find an article I wrote about my WSPR DDS beacon.
It uses cheap parts (MSP430, AD9850 DDS, optional LCD) and does not require GPS with good accuracy "out of the box".
All materials, schematic and source code (GPL license) are provided freely.
This is the beacon I currently use on 80m.

Yan - XV4Y.

I t took me a while to get the Ultimate 3 from Hans Summer going. It was of course my fault, for I didn't RTFM.

And I played around with a variable resistor and destroyed settings which Hans had already done. And it was an important setting the wave form coming from the DDS. But with my new scope it was easy to restore this setting and the TRX began to work. But there was another hurdle: It is so tiny and there are a lot of cables coming out of the rig.

Running new WSPR project based on STM32 Discovery board.
Initially it was an attempt to use this nice board and it's integrated ADC as fully self contained DDC-like SDR receiver of 60 khz WWVB signal using new phase modulation mode.
After successful completion it was a question of time how to convert it into standalone WSPR (and QRSS) beacon.

73! Igor AK4T

2014-01-30 20:04 F5MWW 7.040132 -29 0 JN25px 0.01 VK7BO QE38mo 16928 94

My antenna is a 2 elts vertical phased array.

73's de F5MWW

I had several decodes in the early hours today from N1NAZ. This was the best SNR:

Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az
2014-01-29 02:20 N1NAZ 1.838099 -21 0 FN42gu 5 G3YJR IO93fj 5102 51

I was using a 40m delta loop at about 10m high for the main horizontal(ish) section.


The goal of my 160m season is already reached. After the latest night, my 160m Challenge of reception include 29 unique callsigns of North American stations. I finished the previous season with a count of 27. So I hope now to "blow up" this score because the period is not over.

I have a great pleasure to publish this list with the power to show the qrp spirit of all the station i heard.

I am running tests between two antennas in the garden Friday morning on 10m (28.1246MHz), between 10:00 UTC and 12:00 UTC. Would appreciate some spots out there if anyone is game. Assuming 10m is workable that is.