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.

A little while ago I got tired of XP wasting more than half
my office computer's memory. I coughed up $125 to upgrade
to Windows 7 64 bit premium. If there justice, the cost of
W7 should be subsidized by hardware makers. Let me count the
ways W7 forced hardware upgrades:

Video board - The current video drivers for a Nvidia 9600gt
caused the status messages for WSPR to disappear. Upgrade
to ATI.

Since I first joined here, I renewed my license and upgraded to Extra!

Just this week, with the help of a post on the forum, I was able to get the IC-7200 fully functioning with WSPR on Windows. The tasks are as follows:

    - Go to sourceforge (link) and download HAMLIB v1.2.11
    - unzip it. We need just three files.
    - Find hamlib-icom.dll, rigctl.exe and libham-2.dll. Copy these to the wspr program directory. We want to replace the existing versions.
    - Find the text file "hamlib_rig_numbers" (at least it seems to be all plain text) and add this line somewhere:
    361 Icom IC-7200 0.5 Untested
    The above is a direct copy paste from my own file.
    - Start WSPR. See if it complains about something in the hamlib_rig_numbers file. I messed with it for some time, I couldn't see what it was unhappy about, but I eventually got it to take the new line.
    - In setup, select:
      -- PTT Method is CAT

I have been increasingly fascinated by the precision and accuracy available in digitally controlled VFOs, like TCXOs, and disciplined oscillators using either Rh or GPS standards. But the lowly Si570 driving my Genesis 30/20 is holding to +/- one or two Hz, and it's pretty good against WWV, once calibrated. Right now, I've set my WSPR frequency to 10.140215, and I'm WSPRing away this evening....and that's precisely where it's being reported by most listening stations. I can even tell when some rigs are off by 10 or 20 Hz!

I got a PIC-EL to use on WSPR to save using my expensive HF radio. I got it going but was frustrated by a lack of an output when its transmitting a signal (needed to key a PA) and the DDS60 drift.

I have written up my solutions at

It includes details of how to GPS lock a DDS60



I am listening on 4m WSPR again today, RX only. Using my old Yaesu Converter and home brew Vertical Dipole antenna.

Results in the evenings last week were encouraging with Spots of G6AVK, 127km, 5Watts to his Vertical only 2.5m off the ground.

HF Tx antenna unavailable.

Rx only. Equipment FRG-100 + 100ft random wire.

Current unattended automatic monitoring of 10m

It appears that DL5RBD was receiving 20-meter signals, but reporting them as 40-meter signals on 09JUN2010.

... on 30 m but unfortunately there are 3 or 4 stations that send all over each other right in the middle of the freqeuncy windows at 200.
Please after setting up your WSPR program choose something under or above the default setting on 200 to be sure not be overlayed with another station. See screenshot.

Many thanks!

73 de Gregor DM1RG

I'm obtaining very good TX results on 30m with a poor balcony mounted fishing road antenna,
about 4.5m of AWG28 wire, oriented at 45 degree, feeding a 4:1 UN-UN (T200-2) transformer, followed
by a Z11 PRO2 tuner.

At firts TX shot, reached New Zeland, ZL3TY, and many US East cost stations, with a power of 5 watts.
Then Venezuela, YV4GJN.

Thanks to both for their WSPR activity.


It's good to see some more distant stations on 10m after months of just hearing locals.


My one-watt radio wave on 17m(18MHz) band was heared in URUGUAY.
The distance from Japan to Uruguay logged is 18584Km and this is the maximum record ever since I started WSPR.
Uruguay is almost opposite side of the Globe, so I may not get longer distance in future.
Thank you CX2ABP/Rodolfo for operating WSPR.

2010-05-29 14:20 JA1QQU 18.106057 -24 -1 PM95tl 1 CX2ABP GF15wc 18584 92
(found 4 logs in about 1 hour)

de JA1QQU/Yas

I've been mildly interested in WSPR (and weak signal in general). Today I decided to listen on 10m - put the RX loudspeaker on the table next to my netbook running WSPR. Shortly after it decoded 4A4BEJ at 2127Km which correlated with the database.

Wow! Nothing special here RX wise, just a quarter wave vertical and IC-706. I'm going to work with WSPR more often and think about an audio interface to the transceiver. Reading the forum here shows a good community around WSPR as well.

Good WSPRing - David.

Got my WSPR station setup. Using an FT-817 running 1 watt into a sloping 30 meter dipole. Upper end of dipole is at 50 feet. The slope should favor the west. On the first transmission the farthest station to hear me was K7LG at 3014 km. SNR was -18. Eight stations heard my first transmission: W6SZ, K8CYV, SWLPMTN, K7LG, VE7THZ, W3HH, AB6OR, AC0NM.