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've been using JT65 for about a year and having fun with it. Just discovered WSPR and am enjoying "listening". I have a softrock rxtx on order and plan to be on-the-air within the next few weeks.

Been having fun listening on 474KHz, and bagging a number of good stations on WSPR-2 mode using my funcube pro plus dongle and SDR Console software. Recently acquired a Clifton Laboratories filter to get rid of some local BCB QRM and now hearing much better.

Next few days I will listen at night with WSPR-15 mode. If you transmit on 600M, I'd love to see how this mode works.

Thanks to Hans again - yet another on the air.

Any spots greatfully received - I've just hooked up the SKM52 GPS to the U3, both of which worked first time :-)
The GPS is incredibly sensitive as it locked first time in the shack (with not a window to be seen)!

120mW to a top band dipole so fingers crossed,

73 de John G8DYK

Hi all,
Today my beacon is ON and will be until 31 of may.
Info on

4 spots:
Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az
2014-04-30 01:40 IZ3ATV 21.096025 -14 0 JN55vk 5 K4RCG FM08xl 7070 299
2014-04-30 01:18 IZ3ATV 21.096023 -25 1 JN55vk 5 K4RCG FM08xl 7070 299
2014-04-30 00:34 IZ3ATV 21.096024 -24 0 JN55vk 5 K4RCG FM08xl 7070 299
2014-04-30 00:16 IZ3ATV 21.096025 -24 0 JN55vk 5 K4RCG FM08xl 7070 299

Play attention please.

I am receiving Ok on my 703 but cant modulate on TX !

I hear TV for hours and see the odd spot from Jh1GYE and sometime other JA1 stations.
I don't make it to RA0Ck or see any other JA stations.

Hi from Landshut,

i have the level on the Raspberry pi measured.

Here the values
160m +18dBm
80m +18dBm
40m +20dBm
30m +19dBm
20m +17dBm
17m +20dBm
15m +19dBm
12m +14dBm
10m +13dBm

This corresponds to an output of 20-100mW.

Test setup: Raspberry PI + 35 MHz low-pass filter + 20dB attenuator in Sectrumnalyzer no amplifier

greetings from Landshut
73 de DL3RCG

Hi from Landshut, JN68bm!

Since today I´m QRV again with my Raspberry Pi and 10mW (only the Pi-output)
on 10, 12, 15, 17, 20, 30 and 40m to a Cushcraft R7.

TNX to DL3RCG for his support setting up the Pi for WSPR!
Let´s see which spots are possible with this setup!

73 de Lenz,

thought some one might know how to stop USB sound ports re-arranging themselves as devices are plugged in or removed. It is so frustrating to see them all change when an external USB devices is unplugged.

2014-04-19 08:52 DL3RCG 21.096121 -26 0 JN68cn 0.1 VK6ZT OF78sq 13492 103
2014-04-19 08:40 DL3RCG 21.096121 -23 0 JN68cn 0.1 VK6ZT OF78sq 13492 103
Ist ist the first time that VK6ZT herad me.

Best 73 de DL3RCG

No more to say for this surprising and short event of the night. Only hopes to see again Everaldo in 160m wspr
with a bit more of EU station in his log. He managed to lower power to 5w with succes :
2014-04-18 02:08 PY9MP 1.838095 -26 0 GH13dw 5 F59706 JN07th 9184 36
2014-04-18 01:58 PY9MP 1.838095 -26 0 GH13dw 5 F59706 JN07th 9184 36
2014-04-18 01:58 PY9MP 1.838095 -24 0 GH13dw 5 OZ7IT JO65df 10261 32
2014-04-18 01:42 PY9MP 1.838095 -24 0 GH13dw 5 F59706 JN07th 9184 36

Thank you to all for participating in the "QSO Party" helping to commemorate the centennial of the American Radio Relay League (ARRL). As part of the year long celebration, stations (including me, K4RCG) are being authorized to operate with the ARRL HQ callsign of W1AW/4. During the period of 9-15 April, I operated on WSPR, JT65, JT9-2, and PSK-31 during "Virginia QSO Party Week". Results:

12,000 WSPR spots
600 "Unique" WSPR spots
235 "2way" Spots in 117 Grids
360 QSOs using JT9-2/JT65/PSK-31.

I've made 6m 2way WSPR with FR1GZ today.
This is my DX record on 6m WSPR.
In addition, I'm very happy about being heard by HS2JFW in Thailand.

Just a gentle reminder folks...

Please check the accuracy of your WSPR transmissions, I still see quite a few out of the WSPR
sub band, especially on 10Mhz.

These cause QRM to the QRSS sub band which is IMMEDIATELY below the WSPR sub band.

I think that ALL users of these modern ultra narrow band modes really should think about investing in some
decent measuring equipment before being let loose on the air.

Try properly monitoring YOUR own signals, and you might be surprised !

It is almost summer, i have new antenna and i am back on 4. RX only for now, will try to
sort the TX later. Most of the old gear is down, but the OZ2M and the the IC-706 seems
to work, even the frequency is here and there, i will try my best to keep it in the
WSPR window.

My new antenna is double turnstile by G8SEQ:

I seen a prediction for ducting.. I hear 432 beacons.. So, I'm QRV 432.3

Hello WSPR users,

I have been working on a lower cost variant of the Hermes DDC/DUC SDR which I am calling Hermes-Lite. All the details are at

I have been using WSPR/JT9/JT65 to test TX/RX. Details are on github.

Today I will begin my 6 meter WSPR Beacon experiment using 5 watts output to a Squalo antenna at 10 feet.
Location here is EN74oh in Houghton Lake, Michigan which is north central lower peninsula of Michigan about 75 miles north of Saginaw.
73 Ken N8CGY