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 set up the website today where you can see what my WSPR station is heard. Now, overnight, it's 80m band is active. The image up dated two minutes periods. Will test the system the next 24 hours and see if it works properly. Here is the web address if you want to look into:

73 Heikki/oh8gkp

Running my WSPR-station with the following toys:

The rig:
FLEX-1500 doing about 1 w. A Great little rig for digimodes.
Dipole for 30 meters, placed under roof of my house (5 meters above ground)

I used last night Flex 1K5 / VAC/ WSPR-15 and my 80m's 1/4 wavelength GP to 160m Any thing works very well, but small negative sign for the 160m swr is 1.2:1 so I get no more than 4W out. I was surprised to wspr-15 works so well. I have long been waiting for something new to wspr software, and now it has happened. Now they have as well as more control over the software than previous versions and you can see better what happens when you make adjustments to the rx thanks for the new waterfalls, however, programs spirits of new features as well! Now it's fun to use wspr again!

Enjoying wspr, colin m1eak - thanks for the headsup and help !

2013-01-25 22:22 ON4EZ 3.594064 -8 0 JO21bd +0 0.001 F5OIH JN06ci 605 376
2013-01-31 15:10 AC4CX 14.097014 -25 0 EL98iq +3 0.002 F5OIH JN06ci 7127 4429
2013-02-06 06:58 WB2WDC 10.140202 -22 0 FN13fc +3 0.002 F5OIH JN06ci 5897 3664
2013-01-05 09:32 KB6BZZ 7.040094 -19 0 DM14jl +7 0.005 F5OIH JN06ci 9063 5631
2013-01-09 22:52 G3ZJO 0.475695 -29 1 IO92ng +7 0.005 F5OIH JN06ci 663 412

I use Glenn's, KI6GD's, excellent "Magnetic Loop Calculator" (I have v1.4, 2009) to help in the design and experimentation with small loops. For 20m, here are the numbers (the program works with either Imperial or Metric units and various materials and shapes (copper, aluminum and shapes round, square and octagon) all which will affect the final product. Note: According to my ARRL Handbook, Belden RG-213 has a rated breakdown voltage of 3.7kV (RMS) and at the 50 watts operating power level the capacitor voltage is 3.3kV.

A few years ago, I wrote a couple of articles on modifying and using WA8LMF's 30m magnetic loop design. I've re-edited and put them on my website. If anyone is interested, you can download the ZIP file from here:


This is the copper tubing magnetic loop that I'm testing outside. Since it has a stand, it's easier to set or move around and move stable in wind over the MFJ-933 tuner/wire loop. The 12.5mm (1/2") diameter copper tubing is wrapped in high-voltage rubber tape (60 kV) just in case someone were to touch the loop when it was transmitting! The copper look is 3.03m (10') and in inner, inductively coupled drive loop is 0.606m (2').

I found this helpful to understand the 10MZ Rubidium Standard..........

Hi all

For those of you interested in the Next Generation Beacons project a new software package for the DDS unit has just been released (1.2.0). New features are WSPR-15 among others:

The Next Generation Beacons platform is open to others and the software can easily be adapted to other modulations and sequences. Furthermore, is the new platform frequency and time locked to GPS. Thus the frequency accuracy is better than 5 mHz.

Well, finally got my Flex-1500, VAC and WSPR software working togetther (TX/RX/PTT and CAT). Had to setup the CAT as a Kenwood TS50 to get that to work.

Amazingly, my indoor magnetic loop antenna is doing a very good job for TX/RX with the 4m of #10 wire and MFJ-933. Will have to try the home made 12.5mm 3m copper tubing and coax capacitor tuning stub to see which one performs better. Since both are side by side, it's easy to switch between the two and make fairly comparative tests.

Paul, VK4ZBV, asked my to put up some info on my use of WSPR on the Mac.

I have tried various compiles of WSPR for the Mac and almost all have had the dreaded memory leak, which causes the running application
to allocate more and more system memory until the available memory is exhausted and the application quits, or it brings down the Mac itself. In additions, I normally
had to use a supporting SDR Program and Soundflower to channel audio to the WSPR applications.

Experimenting with an old Wonder Wand Mk 2 (52 inch whip antenna and counterpoise). Results are surprisingly promising with JT65A contacts being made out to 1300 miles using 2 watts. Also running WSPR with the Wonder Wand on various bands.

Just switched over to Meinberg, DT's are a lot closer now, (most less than 1 second),Meinberg gets my vote! While I am here, have to plug my new (just completed) Mag Loop, working like a champ!

73, John KC4RSN

So far this is working great for WSPR and other digital modes. Had to reboot a few time to get the VSP's to align themselves so WSPR would communicate with the flex.

I've created a GitHub repo for WSPR on lubuntu (a lightweight version of Ubuntu) 12.10 x86_64 at:

Kenji Rikitake, JJ1BDX (also JO3FUO)

This is my first time experimenting with WSPR, so I still have to do the initial setup and all.

Today I posted an installation file for WSPR-X v0.7 r2960:

Changes from r2948 include the following:

1. An intermittent problem with asserting PTT has been fixed.

2. Frequency reports when the Rx BFO is set to a value other than 1500 Hz have been fixed.

Some of you may be interested in trying WSPR-X, a new version of WSPR that includes the slow mode WSPR-15. WSPR-15 uses 15-minute T/R sequences, rather than the standard 2-minute sequences; at MF and LF it is 9 dB more sensitive than WSPR-2, decoding signals as weak as -37 dB in the standard 2500 Hz reference bandwidth. WSPR-15 is not recommended for use at HF: the tone spacing is only 0.183 Hz, less than the Doppler spreading typical of many HF paths. The main intended application for WSPR-15 is for very difficult paths at 137 kHz and the new 472 kHz band.

I have placed a self-contained utility that, in one go, will generate a text file for use with PIC assemblers. The utility will generate either conventional callsign/4 digit locator or compound callsign/6 digit locator data. Additional information is at

Gene W3PM