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.

Since i have chosen the SI570 for local oscillator in mcHF i was wondering how good my implementation of the comm routines really is. After spending long time of tracking a bug with setting some specific frequencies I have found that the chip has internal mechanism that cause it to revert to factory startup frequency if error occurs in the frequency setup routine.

That night a highway was opened between Dan and Europe on 160m. A continuous signal throughout a night is rare.
Between 00:12z and 06:42z, I spotted KC2STA 47 times without missing period.
This is an opportunity to draw a graph to highlight the gray line near my sunrise (06:27z).

An hour before SR SNR was -22,
30mns before SR SNR is -11 or +11 db of gain!!
At SR SNR is still -14 to collapse then in few minutes (06:42z).

Dan was spotted by six other European stations: OZ7IT, SM6WZI, PA0O, CT1JTQ, G8JNJ/A, G3ZJG.

I'm running a Dell 600 laptop into the FT-817 and the antenna is a low mounted temporary 40m dipole.
I left the power out level of my FT-817 at full during the activity session from about 0600z to about 0920z today. So the given power of 0.05 is rather inaccurate, and certainly not magic!
Still it is nice with spots in NA and two from VK land.
I set the output level down at about 0920, and will connect up the U3 again later today, on 30m.
Peter, LBOK / LA7ZMA

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