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 put up a delta loop for 30 meters. I am feeding the loop at its apex which is at 25 feet. TX power is set to 10 watts.
A 1/4 transformer for matching.

The loop appears to be doing well as I am being heard by:


I just set up a MEPT with WSPR, PowerSDR, a SoftRock RXTX Ensemble and a 40m delta-loop.
Power must be lower than 500mW but hard to measure for now.
I hope to turn the MEPT on during the following nights but I still have some details to sort out.

Yan - XV4TUJ.
Yannick DEVOS - XV4TUJ (Blog in french) (web page in english)

Finished my SDR Lite II last saturday for 30m. Last night I started VAC + Rocky + WSPR to see
if any good. And yes it works :-)

Slightly off frequency, but have no decent time marker available to adjust the single band setting
in Rocky. But hey it's good enough tot start with.

Antenna is a simple dipole, parallel fed with a Diamond W735. The W735 is now a 4-bander (80/40/30/20), just 2
meter above ground.

73 ON3JT

Sorry! My english is not so good if I want to write someone, then please in german! Thank you!
Sorry! Mein englisch ist leider nicht so gut, wenn mir jemand schreiben möchte, dann bitte in deutsch! Danke!

Tried WSPR for the first time today had so issues with the software but seems to be somewhat ok now. Saw a lot of stations on 20M and 1 on 30M will try to get on more to fully check it out.

While setting up for WSPR ops- the first time in a long time- I noticed a lot of "racket" (noise) just before and after the WSPR program transmits its audio tones.

Some further observation found that; regardless of the WSPR program, my FT-857D (s/n 4J31...) makes a great deal of audio noise in transmit mode. The noise is obvious, when all audio input is turned off or unplugged. With the mic gain turned down to zero, or mic unplugged etc., and the RF power output tried at various levels, the noise is heard in a nearby monitoring receiver. (Even XMITR turned right down to its lowest output setting of 5 Watts still produced the noise)

Iahve activated my 10 meter receive only WSPR station as of this morning.

Will try to keep it up 24/7 as much as possible until I get it I can move it to the "server farm" also known as my garage...

Will also try to get a better antenna setup as I am using my only 10 meter antenna right now in a Moxon beam aimed 180degrees from my QTH FM09ap.

I was just wondering what has been done with the data that we've been collecting? I would be interested in seeing what has been learned. It would be interesting to see if the data could be used to model path loss between various parts of the world maybe tying that in with solar activity. I must admit that at the moment I don't know were to start trying to put that kind of a model together, but if anybody has come up with results like that, please share. Maybe people have and I just missed it.

Dave, G0DJA and I had a go with WSPR on 23cm today.

Dave transmitted today & I listened.

We only tried a few transmit cycles. I received good strong traces with little drift and with rx well time-synched.

On 4m, Brian's signals from Liverpool way often show doppler reflections & distortion, but decodes are reliable.

VE5MU has moved from Regina, SK (DO70QK) to Saskatoon, SK DO62QD, also running a new antenna, a large delta Loop approx 350 feet , apex at 4o feet and fed in from one corner with an SGC tuner at the feed point.


Today I received my first SWL rpt by mail from Frank Hunger from Germany.
A nice postcard and a very nice letter with ofcourse the details from his reception report.
Thanks for this one Frank and a qsl card is on the way back to you.

Greetings Johan, PE9DX.

Up to an hour or so ago, reported power on transmissions
of 5 watts or less were understated by 2-3 db. This was caused
by my MFJ tuner reading 2-3 db low in the one watt range.

While MFJ does not spec the accuracy of the wattmeter in the
993B, it is inelegant to show two significant digits when
the measurement accuracy is less than one significant digit.

Thanks for the suggestion of GB3RAL Graham. Unfortunately I can't hear it! I can't hear GB3MCB most of the time either.

GB3ANG 70.020 reads 70.019,89 so 110 Hz low on the dial.
GB3CFG 70.027 reads 70.027,75 so 750 Hz up on the dial.

So no consistent shift and so I don't trust the accuracy of the beacon frequencies.

I'll try 28.028,80 as my dial freq for WSPR today & see if I can spot you & Brian again.

I decided to try something fancier than the Minimalist
sound card interface I described previously.

This hasn't worked so far.

I'm pretty sure the clock is pretty well synchronised and the antenna and transverter are working pretty well. The WSPR software worked fine on 10m with sensible-looking decodes.

The problem may be that my rx frequency is off. I'm having a problem checking this as the only beacon I've heard recently is GB3ANG.