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.

Hi all.
As a follow up to my WSPR receiver I have just released my standalone all band WSPR transmitter with built in GPS for the radio amateur experimenter.
It is built to be both simple to use and to be a platform to be expanded from for the experimenter.
Some quick features:
1 Standalone operation, no PC required for operation.
2 Works on any Ham band from 136kHz to 70MHz
3 Is powered from 5V.
4 Pre-built and tested except for the output Low Pass filter that needs to be built by the user.

A few hours today spotting stations on 17m. It must be 40m band sorry 73

Trying to get the QCX-30 to be seen, but need to improve my antenna.

Antenna system now has 32-10 meter radials buried about 2 inches below the surface.

We have upgraded the WSPRlite firmware to support Type 2 and 3 WSPR messages (compound callsign and six character grid). This upgrade, together with the ability to run a WSPRlite from an Android phone makes it a handy package for a little holiday WSPRing. In this configuration, the WSPRlite gets its grid and timing from the phone (internet connectivity needed). It can also be powered from the phone!

Yesterday I started changing from RedPitaya DEBIAN Linux system (Pavel) to his new ALPINE based system.
Main reason is that with the last Debian WSPR release an incorrect shutdown always leads to a file crash killing the complete SD image.
So I always had a back-up SD cart prepared.

Firstly it seems to be easy to change but I have a 5W PA from QRP labs and a 5 band filter bank. All switching is done by the RedPit GPIO and a relais board from QRP LABS. And here was the problem since the CRON tab is handled in a different way.

Just upgraded the tall vertical from 11 Meters to 14 Meters. Currently operating with 8-4.5 Meter radials and 8-10M radials.

Next improvement will be to extend the 4.5 Meter radials to 10 meters, for a total of 16 10 Meter radials.

Does WSPR employee an algorithm that limits the time that any one station can operate for a period of time?
I notice at times when I fire up my station to operate on WSPR that it just indicates "waiting to start" indefinitely. I then wait for a couple of days and it works just fine. (WTF is happening ???, over) de N9UYC

Starting at about 1715 UTC on 06/30/2018 I will be switching my RX frequencies from the HF to Vhf/UHF bands.

My 2017-2018 season on 160m WSPR is now over.
Some general data:
- best season session was Feb-01/2018 with 416 unique NA-EU dx spot (All Time 435 Jan01/2017)
- number of session with NA-EU dx spot: 318 nights (317 previous season)
- 455 stations (NA+EU) were able to listen to a station on the other side of the Atlantic (484 previous season).

The antenna now in use on 20m is a half wavelength of wire (14mhz) formed into a square 8 feet (2.5m) on a side and fed at the bottom horizontal run via an SEM Z match.
The idea is to experiment with the high angle of radiation from this arrangement (mostly directly upwards, the initial results show an extremely efficient method of covering almost any distance out to 2000 km with the present band conditions (mostly Sp/ E) with some surprising DX results too, Japan, Alaska, Antartica, Western Canada and the United states and South Africa.

My New website has my blog and information.