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 have written an article about WSPR and how to get started. I thought I'd do it while it was fresh in my mind!

You can read the article, WSPR - Distant Whispers, on my website. I hope it helps a few people get interested in this mode, so we can see spots from a few more new places!

Just got started using WSPR, after it was mentioned to me in an email from a fellow Elecraft user, Trevor, G0KTN.

I think I'm going to love this mode. Being home all the time, but usually too busy to spend much time on the air, and with one of my main interests in radio being just seeing how far a little RF will go, this is a great way to see where I can reach with little effort.

Starting tomorrow at 0z is the CQWW RTTY. Of course it won't affect 30m users, but 80, 40 and 20m are going to be full from edge to edge (and even outside the dedicated digital segments).
Rather than complaining about it (I am a contester myself !), I think it is a nice opportunity to focus on bands where the activity remains low or quasi inexistant: 17m during daytime and 160m at night.

Thanks to K9JKM and KF6KYI my amsat buddies in peaking my interests to try out wspr. Is very interesting.

I am building a ham shack at my new house so for now my shack is a folding table that sags in the middle, ha ha. Gear includes IC-706MKIIg and AT-180 coax tuner feeding 100 feet of rg-8 mini into an ALPHA DELTA DX-CC multi-band dipole sloping down at 45 degrees and folded over on itself about 50 degrees to face to the east.


I obtained the go ahead to run an Unattended Solar Powered Test on 10.140073 MHz during the summer months.

My Multimode MEPT recently completed 62 days of trouble free unattended operation. During this time daily spots were posted proving its constant signal. QRSS Knights posted captures of the visual modes and it appeared on the Grabber network. In addition I personally viewed the signal from up to 1000Km away.

This proves the stability of what I shall call the SM6LKM method of setting voltage levels for the individual tones.

After initial successful experiments, my station seemed to go dead. Receiving but not transmitting.
Was transmitting at tiny power - seemed to be a milliwatt or so.
Finally tracked down the issue. I had changed from my 'experimental' data cable to my 'production' cable. The experimental cable was using the 1200bps pin and the production cable was using the 9600bps pin. Changed the rig (FT857 and FT897) to DIG mode rather than USB and all FB now. QRV again.

de Glenn, ZL2TLD

FT857 or FT897 on 30m into 40m Windom via ATU until I put up a dipole for 30m. Antenna is resonant on 40/20/10 if anyone wants a sked. email address on

I finally did some work on the map page. The map now displays stations which report status in the most recent hour but haven't heard anything or been heard. It will show their Tx percentage, frequency, and dBm (this information is reported by WSPR 1.0 in place of a spot upload each time slot in which nothing is decoded). So now we can have an idea of the activity on a band when propagation is poor.

Also, stations which report themselves as receive-only are flagged in red rather than blue.

During all this week I will have my beacon in 10 meters...

28.1246 Mhz... 10W & 30m LW...

150 ASL - 100 AGL

I hope that there are many reports and let's cross the Atlantic ocean...

73's de EA2NN...


I'm about as barebones as can be imagined.

Transceiver: Yaesu FT-817, typically running 0.5w
Antenna: 40m dipole, coax fed (yes, not optimal on 30m)
Software: Homebrew beaconing software, written and running on my MacBook

I'm writing up some of my experiments on my blog at

I've also begun to acquire the parts for a standalone beacon based on the 74HC240.

Radios: ICOM IC-746 HF/2 meter transceiver and Kenwood TM-700D 2 m./70 cm. transceiver
Antennas: MFJ-1798 2-80 meter vertical (used for WSPR) and Cushcraft MA5B minibeam on 30 foot tower for 10-20 meter DX. Also two Diamond gorund plane verticals for VHF/UHF work.
Computer: HP Pavilion 5568 running Windows XP and MS Explorer 7.
Geographical Information:
Elevation: 260 feet
Grid square: FN42fb

I have decided to stick to the one antenna my 160 Meters vertical for all bands. 160/80/40/30/20/17/15//12/10 Meter.

Name : Paul

QTH : Zuid Scharwoude ( 40 km from Amsterdam )

TX-RX : Kenwood TS-2000X , Kenwood TS-850s , Icom IC-7000 ,Flex-5000A Home made amps for hf 700W. and 23cm 50 W , ATV 10.4 Gig.

Tuner : Home made C-L-C tuner ( automatic tune via PC )

ANT - HF : Hustler vertical , full size dipoles for 80-40-30m, full size loop 160m, magnetic loop 80-20m.

ANT - VHF-UHF-SHF : Diamond X200 , Comet GP50 , homemade beam 2m , Crossyagi 2-70 , 27 ele beam 23 cm high band , 27 ele beam 23cm low band. Horn 10.4 gig , dish 10.4 gig.

rx/tx icom 7200. power 5 wats
age 63. qth heemskerk
antenna magnetic loop indoor . homemade.