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.

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.

I try to be active for an hour every day to correlate the radio coverage with the solar activity.

I try to be active for an hour every day to correlate the radio coverage with the solar activity.

Great kit got it running with GPS and a RTC kit from QRP-Labs.
ran a 40m Test tonight on 500mW

I try to be active for an hour every day to correlate the radio coverage with the solar activity.

Go here :
to read some more on my WSPR receiver but also for some observation on the effect of the local noise level for WSPR reception.


It was getting time to upgrade from the fine radio ic706mkiig, I was getting good signal reports and all but after researching new radios I settled on the ic7300. already having much better reports from who can hear me...look to enjoy.

Transmitting = 66 foot end fed from 25 ft above ground to a deck 8ft above ground back to the building and back to the deck in a zig-zag pattern to avoid overlapping turns and parallel wires.

Receiving = a 3ft diameter amplified loop with a send/receive switch box.

Rig = Yaesu FT-450D

Note: If I use the end-fed for receiving, my noise is S9. On the amplified receive only antenna the noise is S7.