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.

Spots reported by la5zl thursday between 07z and 09z on 15m.
was actually rx'ed on 20m.

Excellent night session on 160m WSPR with great opportunities and so, great spots!!:

2013-09-01 19:54 ZS1LS 1.838070 -25 0 JF96fd 20 F59706 JN07th 9181kms
2013-09-02 04:00 W1FVB 1.838062 -21 0 FN44ej 5 F59706 JN07th 5467kms
2013-09-02 04:00 VE3SWS 1.838105 -24 0 FN06ge 20 F59706 JN07th 5882kms
2013-09-02 04:04 K4RCG 1.838096 -23 0 FM08xl 20 F59706 JN07th 6278kms
2013-09-02 04:38 K9PAW 1.838188 -26 0 EN61ar 1 F59706 JN07th 6723kms



Hi Chaps,
Ran the CFL last night on rx test, with a very low tx ratio. This CFL is now mounted at approx. 8 meters ( 25 Feet ) above ground. It was setup up on 7.040 Mhz, where the bandwidth is much more than I expected, over 100 KHz. This little aerial is only 40cms (15 inches) in diameter. With this setup in the horizontal mode, this tiny aerial heard two Vk's and several east coast stateside stations plus various European stations. At Midnight 31st August this little setup goes on line for an extended test on 7Mhz.

( Softrock Ensemble @ 500mW )

This modification to GM4ISM's Excel Spreadsheet polls real time WSPRnet data and estimates the signal path quality for various communication modes: WSPR, JT65, Olivia, PSK31, CW, RTTY and SSB. These charts show expected signal dB over threshold on these modes with user-defined transmitter powers and relative antenna gains. The values below threshold are in red, above 6 dB in green and intermediate in yellow.

Running 3w to ATAS-120 mobile antenna on 20m daytime.

Tried my first ever transmission on WSPR this evening. On the very first TX period I got this:

2013-08-26 18:10 G0LRD 14.097194 -24 0 JO02 1 HS0ZLG OK03gr 9435 74

9435km from 1W into a poorly positioned 20m off-centre fed dipole. Very pleased!

Today 24.8.13 using a Pro Am 17m band mobile whip.

I spotted this morning, with a little advance, my first North American station of my new season in 160m WSPR, as usual in my gray line:
2013-08-24 03:54 VA3MW/P 1.838148 -22 0 FN04qm 5 F59706 JN07th 5930 56
2013-08-24 04:06 VA3MW/P 1.838148 -21 0 FN04qm 5 F59706 JN07th 5930 56
2013-08-24 04:14 VA3MW/P 1.838148 -17 0 FN04qm 5 F59706 JN07th 5930 56
2013-08-24 04:20 VA3MW/P 1.838149 -16 0 FN04qm 5 F59706 JN07th 5930 56

For the last year or 2 I have played with WSPR, but never had a dedicated WSPR station. I have one set up now and will let it run for when I am home. Its tough going from a non-digital mode station to a digital mode station and makeing sure all settings are correct, as far power and audio levels. I am using an MFJ-249 radio interface card as the interface. This is a little dated, since it interfaces VIA serial port as the PTT.

Hope to hear everyone on the air!


Used the antenna analyser tonight to setup the CFL on 7.040Mhz , then just for a quick test I left it running on RX on 7Mhz.
Most surprised to hear signals from around Europe, the CFL is just 40cms in diameter and its just plonked on the shelf next to a netbook and softrock ensemble, and all at ground level. Should prove an interesting test when its mounted on the house apex at approx. 5 meters.

Regards Paul..

I found this article/ adjustment to be very helpful, I had a sideband/harmonic about 100KC high that I could not get rid of, this sample rate synchro procedure cleaned it up. Thought it would be a good idea to share with the group, in case other's are having similar prob's.

73, John


As I understand it the 30m WSPR subband ends at 10,140,100
although I know that the WSPR software includes a little bit
of overlap by default.

Unfortunately QRSS activity tends to start below 10,140,100Mhz
and there seems to be a few users using WSPR below the accepted sub band.

It may be a TX error and users not aware of it, but it would be nice
if WSPR'ers could bear in mind the QRSS activity below 10,140,100 please.

Kind regards,


Ultimate 2 QRSS kit 100mW into G0FAH dipole up 45'. 20m 14097090

Thank you for looking me up on here but please do go look me up on and leave your call sign in the web button.

10.8.2013 I have started a test operation of simple homebrew DDS beacon. It currently operates on 6m only (WSPR and CW FSK 50.045 MHz) using 5W to 6 ele Yagi (heading mostly NW) from my home QTH but it is able to work on all HF bands as well (planned 80 and 17m), I will try it later. Plan is to move it to more convenient location later. Time schedule: there is a table with 10 time slots, each lasts 2 minutes. There are defined a mode (WSPR or CW) and freq for each slot. The time slots are processed cyclically (that means sequence repeated every 20 minutes).

Hoping to be able to do some tests on 40 meters starting in September, running small compact aerials such as the CFL and EH etc

regards Paul.

Costa Rica TI (tango india) is a country with a few, but dedicated,
amateur radio operators. We enjoy WSPR-PSK-CW, always learning and helping... any questions??
73, TI3/AB4AW Rich email

I enjoy experimenting with antennas and using WSPR to evaluate antennas has been an invaluable tool. I also use the SoftRock RXTX Ensemble under Linux and recently wrote some software that allows you to use the RXTX Ensemble as a VNA for reflection measurements. This has also been an invaluable tool for antenna experiments. You can find the VNA code at:

I've been impressed with the mini whip antenna used at the main websdr station: You can find out more about the mini whip at Recently I had the chance to borrow a mini whip antenna and test its performance with WSPR. The results from the 30M tests were interesting:

Attic Dipole at 6M height: 820 spots, 174 farther than 4000km

MiniWhip at 3.5M height: 736 spots, 188 farther than 4000km