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 am new to WSPR, but I already have a question: Do you report your WSPR contacts (contests, WAS, DXCC, etc)?

With the seasonality of 160m, it is nice to see again friends. This morning, Frits was present to the RDV of 160m wspr. Once again, I heard its 500mw (last time 2013/10/09):
2014-10-18 03:58 W1FVB 1.838047 -27 0 FN44ej 0.5 F59706 JN07th 5467 59
2014-10-18 04:58 W1FVB 1.838044 -24 0 FN44ej 0.5 F59706 JN07th 5467 59
He tried to reduce to 250mW without success but it is only "postponed".

Frits wrote in his blog this morning(

Wasted several hours today trying to find a 6 character ML code that at least covered my suburb. Ended up improving over the default but the 6 character combinations are really too coarse - possibly ok for HF where the distances are huge, but more precision would be good for VHF.

Antenna - Inverted L, 80 ft, parallel LC to "resonate" on both 160M/80M, trapped for 40M, metal fence ground, total cable/tuner loss < 1.5 dB over full 3 bands.

About 45 ft is vertical, the remaining 35 ft horizontal, suspended between 2 trees.

The base parallel LC achieves simultaneous resonance on both 160M and 80M. Note that there is nothing magic about "resonance" - it's only purpose is to reduce the in-band SWR in order to reduce the feedline loss to below 1 dB over the entire 160M and 80M bands.

My beef is with POWER !!

Turn it DOWN !!!

The Wspr site greets you with :-
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.


During the afternoon, I have modified my RX antenna for low bands.
Hope catch DX on LF

73 de Vincent F5OIH

Struggling with this at the moment, so any suggestions greatfully received!
I'm using SDR# v1.0.0.1326 together with the FDD and WSPR 2.12.
RX frequency in SDR# set to 40 metres, 7.038.600 and hear and see WSPR traces in SDR# waterfall, (they stop when they should etc) but WSPR decodes nothing. RX noise level in the WSPR display seems high at (red) 21dB but can't reduce this at all.
Oh yes, the pc is an old core 2 running Vista

Many thanks for reading this,
John G8DYK

An RF-powered quadcopter supported antenna and findings of the VHF/UHF WSPR group will also be presented at the "Introduction to WSPR" session at 10:45 am on 11 October at the ARRL Pacificon Convention at the Marriott Santa Clara in Santa Clara, California.

40m - 1/4 Vertical or Horizontal Dipole
20m - 1/4 Vertical
15m - 5/8 Vertical
12m - 5/8 Vertical
10m - 5/8 Vertical

In this year I have a part of my summer vacation in Crete (south coast, Plakias bay) and got the idea to combine this with experiments with WSPR. It is vacancy with family and friends. So no time for radio QSO, but all time for eyeball qso!

Hello All
Myself and others will be txing WSPR on 630 meters tonight and almost every night.
Set your dial to 474.2 khz Upper side band.
You must have Experimental license to transmit .
You can rx and upload spots .
You will be surprised what you can hear on an 80 meter dipole.

73 Ken WG2XXM / K5DNL

Running 100 mW into a hex beam pointed SE from FM06, the conditions are incredible today.

Stations who copied me that were surprising, and show just how good the prop is on 10 meters:

I have recently been beaconing on Ten metres and have been interested to see on the MAP how propagation develops over a 24 hour period and how seasonal variations appear to affect paths. But something I have noticed which may be an indication of a problem at my station is this.......
After a pre sunset session of good decodes......

Second active EU sunrise on 160m wspr of the new season to NA stations. 70 dx spots across the pond in the wspr data base mainly around sunrise window (04:00z and 06:00z). Five NA stations heard in EU (KJ4YBS, K9PAW, VA3MW, K9AN, N3CO) by a gang of seven EU stations whose spotted a least one NA stn. To note the absence of Bob K4RCG of this session despite good cdx. Maybe according map the path was a bit more north of him?
Hope to see more and more EU and NA stations to the coming days joining to the party.
73, Patrick, F59706

After having purchased an Elad FDM DUO SDR a month ago I started with WSPR this afternoon on 20 meters.

Amazing how the beacons are making it all over the world. With QRP 5w I succeeded in reaching the other side of the world : from my point of vue i.e. New Zealand.

The software that has realised all this is WSPR-X, with a beautiful waterfall and an adjustable noise level. Great job from the developpers.

Some spectacular pictures taken this afternoon in attachment.

Having just set up a simple stealth dipole on 17m with Hans Summers excellent Ultimate 3 kit, I was amazed by the results.

First use of the 4'square thin wire loop went well, pulled in Italy and Spain from near London. Not too bad. The basic idea is to use the thin wire loop as an untuned low Z sensor, this then couples to a High Z bandpass pair to exclude MW broadcast signals. A Jfet fronted amplifier provides 6dB gain with low noise and very good linearity to drive 30m of 50ohm coax back to the Shack.

Hello All

Myself and other will be running WSPR beacons.
I will be qrv @ 0100 or before.
Set your dial at 474.2 khz upper side band.
I will be running 3 watts ERP into 60 ft vertical.
This station has been copied all over the US , AK, HI, Canada and EU
There is some info on qrz-dot-com.
My Call sign is WG2XXM ( Experimental License ).
Unless you have an experimental license you may not
transmit on this band.
However you can monitor and upload your spots.( Much Appreciated )

73 Ken WG2XXM / K5DNL

Tonight is the first time that my new MF active bandpass loop has been used. I will still use the 1m E-field active antenna on other bands as it is very convenient to have a flat 1KHz-30MHz antenna for general listening.

The new loop has a 4' square thin wire loop feeding a two pole bandpass then a very linear 6 transistor amplifier with a gain of two. The sensitivity is equivalent to the E-field antenna at 1V/M. At MF both antennae are band noise limited, the H field is as far from houses as possible, the E-field needs a move but tree and shrub screening is an issue.