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.

Yesterday I started running WSJT-X WSPR using my ICOM-7300 at 5W feeding a multi band OCF dipole on a ridge 400M above the Pacific with a clear view to the horizon to the north and east. I believe I may be the only SW WSPR beacon currently in operation on the Hawaiian Islands and have spotted a couple of 40M ZU beacons 12000Km away. I am logging many more spots than I am receiving so even though I measure <2:1 SWR on most bands, perhaps my transmit coax losses are higher than one would wish. Hopefully my location adds a new set of propagation paths to the database.

Finished the home brew mag loop today, 8 1/2 foot main loop, vernier drive capacitor. Testing indoors with 200mW. Be interesting to see how it works, so far it’s been heard on 20M in Germany on a very flat band late evening.

The Maritime Radio Historical Society operates the historic coast station SAN FRANCISCO RADIO/KPH, with a transmitter site in Bolinas, CA and a receive site on Point Reyes. We operate using all the original equipment in service at the time the station closed as a commercial coast station in 1997. Beginning today, we will be running WSPR, receive only, and posting our spots to the database. We plan on focusing on the new amateur MF allocation in the USA.


now transmitting using an Ultimate3S and multiband LPF module, and 5w PA (set to 1~2 watts) at 80/40/30/20/17/15/12/10 meters; antenna is a longwire.

Location GG87 (Rio de Janeiro);

73 de PY1ZB

Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az

2017-10-09 10:48 VK2DVM 144.490500 -26 4 QF56og 20 VK3DXE QF21nv 732 227

Just looking through my spots: 2017-10-08 07:16 VK2EFM 3.594124 -27 0 QF56pn 0.2 EA8BFK IL38bo 18505 253.
EA8 long path on 80m with 0.2W into a low 160m OCFD.

Hello all,

I realized it's quite difficult to find precise information about defined WSPR frequencies for all available bands. So I wrote a list for all bands, here you go! The TX frequency center is always +1500 Hz above the dial frequency.

last update: 2018/01/18
----------Band----------Dial Frequency----------TX Frequency center(+range)--------------

Today is my first day into the WSPR net.
I am working with one icom 7300 5 watts and dipole antena into WSJX software.

Good vibrations for first time

As is my habit of leaving the rig on into the eve to monitor, heard some activity on 160 tonight. Into Philly between 02:20 and 02:34 UTC I caught -
K4RCG -16
W8AC -17
VE3CIQ -12
K9PAW - 27 (nice call!)

Just bought, setup and running the WSPR Lite from SOTABEAMS.
I'm using 200mW on 40 meter, vertical home made antenna (that can be improved; swr about 3:1 !),
I have been successfully logged by many stations (DL, G, LA, EA, EA8 ...) and several US stations like this :

2017-09-28 00:06 ON4LAO 7.040129 -25 0 JO10rn 0.2 KM4ALP EL98jq 7228 285

I'm very impressionned ... propagation wave is very exciting
VY 73's ON4LAO - Pascal

I had thought it a peculiarity of my antenna, though vertical, to radiate primarily to Western Europe; I don't know if it is primarily only Western Europeans that are using WSPR on 30m in this "Old World" area, but a few days ago, I had made a blog post about how it appeared 30m was "afraid" of the approaching nightfall, concentrating more and more intensely in Western Europe as Grey Area approached... But now as I watch 4Z4TJ's results on 30m band on the map over the last several hours reveals the same exact radiation patterns as mine basically on 30m...

Beside the WSPRlite tool
there is also a free site

Now qrv with WSPRlite
200mW , 30m , Dipole.

Anybody knows details of device hardware ?
Looks like it's all done with a PIC32MX130F256B.

After a period, (about 20 years!) I have started operating again with renewed interest.

During the time of inactivity, I had a small stroke which made chatting verbally, which was always a problem for me, even more difficult so I was delighted on rediscovering ham radio that everything had moved on and a large part of it had become much more computer orientated which suited me because as a professional computer programmer this met my needs excellently.