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 use my Raspberry Pi to generate the wspr signal on 20m. After a filter, it goes into a (poor working) dipole directly on the wall (well, it is Munich, I have no chance for a good antenna)
After 3 days of experiment I was heard for the first time. At 08:00 UTC 1000km to Denmark. Not bad!

10 meters to VK, and I was using my off-center-fed dipole. 100 mW still amazes me. 153,335 km/watt = 95,834 miles per watt. Of course, this assumes short path to VK, not really sure how to tell if it was LP or not. VOACAP lines up nicely with short path at that time, and that's good enough for me!

2014-11-29 21:30 WD4ELG 28.126111 -28 1 FM06be 0.1 VK2ZMT QF57ua 15335 259

Not an amateur op, so I'm in the receive mode on WSPR providing "spots" for the site. I was a "Lowfer" beacon op back in the late '80's- early '90's, but now I'm content to be in the rcv mode to see what I can hear under the noise level.

Hello every one ,
for more info look @ my site in qrz

73 from Bert PD1B

I am finally active on 630m using my new part 5 callsign WH2XNA. I am starting with my Ultimate3 kit running barefoot. Estimated ERP is 10mW and I am only able to transmit.

Thanks to N6KOG for being my first spot (ground wave I presume):

2014-11-29 05:32 WH2XNA 0.475710 -26 0 CM97 0.01 N6KOG CM97gs 49 312

I am really at CM97ag (Los Gatos, CA - near San Jose). I will be working on matching my amplifier so that I will be able to increase my ERP to about 0.5W



I've turned on my WSPR beacon on 80m tonight November 28th.
Power is 3W into a low above ground OCF dipole.

Yan - XV4Y

Hi everyone,

The first WSPR TX App for Android is available in the Google Store.

The WSPR Beacon App is made to send WSPR signals using your Android smartphone/tablet as a signal source. All you have to do is couple the audio out with the audio in of your rig (and set it to VOX).

All you have to do is:

I've put a beacon up using the ultimate3 kit with a Ublox7 GPS to condition the frequency.
All seems to work ok into a low down windom.

I've set it to 14.097.165 , good strong satellite fix so that should be right.

I'm now not sure how accurate it is though - the spots so far show a huge amount of variation.

I guess I could be right and everyone else wrong!

QRV with Raspberry PI headless w/o LPF on 20m. Just a long wire in GPIO as antenna. Let me know if anyone RX me.


Thanks to the hundreds of people who have downloaded my WsprNet Viewer program from the Google/Android play store:
The next iteration will include Google maps capability to display great circle propagation, markers, and beacon heat maps. See some screen shots (using Chrome or Internet Explorer) here:

I've managed to get my attic based WSPR PI beacon back online, still just QRV on 30m but if all goes well I should soon be adding some more bands.

Increasing the number of US stations received in JN06CI:

Interesting active night and sunrise on 160m, around 150 dx spots "across the pond", 6 NA stations in the round (K9AN, N3CO, KC2STA, KB1YFS, W1FVB, N2NOM) and 9 EU stations.
To note the long session between KB1YFD and me (38 spots), the same snr level(+/-1) along the night with an early spot:
2014-11-22 23:10 KB1YFD 1.838011 -23 0 FN41ro 10 F59706 JN07th 5555
and the last one at 07:18z.

Thank you to all, Patrick

I have been running two crossed active loops for well over a month now as well as the e-field active that has been up for about 10 years. Living with several antennae is always interesting, the ability to instantly compare always useful. For WSPRing all have virtues, the very broad e-field is always there as a reference of known sensitivity while the directive loops are quieter on the low bands. For size, very low cost and stealth the loops are very hard to beat, they also seem to receive at least as well as a top loaded Marconi on low bands.

Version 1.0.0 of this app is now published on the Google Play Store.

Search there with 'WSPR'

This app plots real-time transmission paths on a world map which may be centered either on the Atlantic or the Pacific. It includes a background display of the 'greyline' or terminator.

Paths for a single station may optionally be displayed with callsigns.

It is highly recommended that you read the FAQ to get the full benefit of the features in this app.

Very many thanks to the testers of this app who have given me much valuable advice.

Not one decode on 160M the last 24 hours.. Taking to rig to work tomorrow to put on the IFR. I think band-relay shot.

As of 00Z February 1st 2015, I am stepping down as one of the administrators for WSPRnet.

If you have questions or need help with WSPRnet such as updating your email address, site issues etc, please contact Bruce W1BW.

Hi all

I have just bought a new Yaesu FT-817 . I am going to use it on 500mW most of the time.
Power :- 500mW
Antenna - Windon CWS-80 TheRadioWorks.

Have recently tried a couple of weekend tests on 160M, still using the same setup, but tuning the Ant system with a MFJ tuner to get a 1:1 Match at the TX, certainly hearing wise,the system seems to work well, but reports back on my transmission certainly show up the in-efficieny of the HF9V as a 160M Ant, without the 160M coil for it? if I hear 20 stations, as a return I am probably only reported by 4 or 5 in return!! May look at purchasing a 160M coil for the HF9V, although its a compromise antenna at best, cannot get anything taller or long out.

I'm now qrv wth My Ultimate3 wspr unit. I'm transmitting on 28.126.100, and now hoping for some reports
Vy 73 de OZ1BEE