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.


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.

My first VK spot using a 1metre dia magloop made from junkbox bits (heavy copper wire, no tubes) at no cost at all!
2014-01-26 10:08 G4APB 28.126024 -26 1 JO01cl 5 VK3OER QF23db 16773 74

OMG, amazing what a bit of 'wet string' and 100mW can do:

2014-01-24 19:36 S55CX 7.040180 -28 0 JN76 0.1 VK2WD QF55 16122 86

Many thanks to VK2WD for the report - still can't believe it!


Since September 2013 start date of my new season on 160m WSPR I was happy to know that Leigh (VK2KRR) came back to the 160m. I was a little impatient to spot again Leigh . The last time was on 25/04/2012 .....
Well last night, as we say in French "J'ai remis le couvert" (I've done it again) :

2014-01-21 19:24 VK2KRR 1.838101 -25 0 20 QF34mr JN07th F59706 16864 306

Today, we tested 23cm 2-way WSPR. Our callsign was displayed on Activity list and Map.
But T/R data was not displayed on the Spot Database.

Data from JA1KWV
1132 9 -0.7 1296.501458 JH1GYE 0 PM96 37
1138 10 -0.8 1296.501463 JH1GYE -2 PM96 37
1144 7 -0.8 1296.501458 JH1GYE 0 PM96 37
1148 3 -0.7 1296.501466 JH1GYE 1 PM96 37
1152 7 -0.7 1296.501471 JH1GYE 2 PM96 37
1202 7 -0.8 1296.501471 JH1GYE 1 PM96 37
1210 8 -0.8 1296.501483 JH1GYE 2 PM96 37
1232 7 -0.1 1296.501444 JH1GYE 1 PM96 37

Been out of the Ham Radio loop for many years and just beginning to get myself back in. Have been working on servicing my old kit (HW101 and Icom IC202) to get them up and running again. So far so good. Only problem is the VFO drift is way too high - so am looking at adding a stabaliser to the HW101 at least. First job is to build a simple frequency counter (thanks to EI9GQ).

Tonight, I've worked 2m WSPR with JA1KWV in Tokyo.

Tonight I will be monitoring 160m with a Wellbrook magnetic RX loop fed into my Anan100D. Hope for good spots.

I plan to try to move the WSPRnet server to a hosting provider early Saturday UTC, probably 0200-0400Z. Downtime should last about an hour, but I'm not sure of the timing yet. Thanks for your patience and understanding!

15 januari 2014
To day i started my big measuring program to get a statistical
feeling about conditions on 80 m. over 240 Km. distance.
A 10 Watt transmitter is running now with a 40m. endfed longwire at
about 6 meter above ground (West-East orientation)
This rig will operate for a few weeks without any changes.
My receiving station is located in Breda with call: PA0JEN
This station also will not change.
PA0JEN has a high level of local noise in an urban location.

Just thought I'd write up a quick note about my station. I built it up over christmas, it was a great excuse to get the iron out and remind myself how to solder again.

I'm running a Raspberry Pi with JamesP6000's fork of the WsprryPi project, which is a credit to all concerned. James has added some useful options to the software which makes keeping it on a stable frequency quite simple.

I have the Flex set up to beacon WSPR on 17 meters. Output power is 1 watt. The antenna for transmit is the 30 meter delta loop. For RX, both the 30 and 40 meter delta loops are used in diversity to the two receivers on the Flex.

On the frequency of the 20 meters 14.097.08 and 'active 24 hours on 24, my beacon in qrsss way. The antenna is a dipole positioned east / west, and the power 'of about 20 db. More info and updates visit QRZ.COM IK6ZEW looking for.
73' to ALL !!!