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.

At first I thought it is a joke, that a bare RasPi should work as a WSPR transmitter.
OK, I quickly burned an image, tuned my matching network to 160m, soldered a low pass filter and BANG! I couldn't stop stunning at the results.

This really carried me away and I also started tests on 40m with the same antenna. Here on 40m I could bridge the Atlantic, but comparing results 160m still seems to be more interesting.

I'll try to build a small PA with a BS170 and I'm already curious about the impact on 160m.

Hello everyone, I am finally getting in to WSPR. I tried it over a year ago, but did not quite understand it. Now that I understand it, I'm going in!

Here goes nothing!

Hello,
Just finished this new kit. Maybe can be interesting for experimenters.
Check my website for more info
http://jackdev23.wixsite.com/iw2ndh-swr-analyzer

Sorry for transmitting wrong output power on February, 20, 2019.
It was 1 Watt all the time, not 0,001 Watt due to a notebook malfunction.

Watching 80 meters at 2AM local time here. Not a lot of spots on others, but it is mostly consistent. A short list of the same stations repeating. I am getting the usual stations seeing me, but these must be set up with very good rcv antennas. But I will take whatever I can get.

After watching wspr for some time now, it seems to be developing its own kind of intelligence between stations. I wonder that the community of wspr is a sort of "hive" mind that is fully aware of the other stations, and is even connected with the RF physics of Earth to promote the communication channels that it wants.

Because the human owners of the stations are largely out of the picture, other than the rote setting up of the equipment, it is left to the emf physics to determine who is heard by whom, and then it begins a sort of machine language between the stations.

Okay I have been writing and sort of occasionally glancing at the wspr results. Have had it on 80 meters through the night as usual. At the moment 80 looks active. 2-3-4 spots on my signal per transmission. I am showing trending up with stns that i hear. 5 decodes between my 20% packets. So that looks good to me.

I will occasionally submit heard spots now. I have an IC-9100 and want to see what I can hear on 20m and other bands.

Okay I think I posted the date wrong in that last blog post. Not March yet. See? I could use an editor. An editor with a shredder.

I have been keeping to the same schedule lately mostly 80 meters at night and I switch to 40 during the day. And occasionally I will make little forays into 30, 20 (mostly 20), and today I tried 15 meters for a while and got zero results. Then dropped down to 17 meters and I got one receive report on my signal! Hooray I was thrilled over that. I don't know where they were. I don't care where they were. I had a spot! Hooray! In my situation it is a victory let me tell you.

На данный момент у меня работает маяк в режиме WSPR-2 на основе
ARDUINO .Мощность поднял до P=1VAT ANTENA -длинный провод с крыши 5 этажа вниз на дерево длиной 65 метров.

Stated with SKY-SDR

DO8FZ using a Homemade Ultimate 3s.

2x13m Trap Dipole Antenne for 80m Band.

10+15m IMAX 2000 Vertikal Antenna

Hi all.
I just released an expansion card to my WSPR-TX_LP1 transmitter.
It expands the transmitter with four switched low pass filters.
With this combo the transmitter forms a standalone WSPR transmitter with on-board GPS that can do band hopping on four or more bands.
It is possible the lowest cost multiband WSPR transmitter available today. And it's Arduino based with open source.
I hope you find it interesting.

Pages