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 have documented my most recent project that allows a portable SSB QRP transceiver to transmit WSPR beacons from a portable location without a computer.

The project consists of a simple audio oscillator controlled by a Microchip 16F628 PIC that has the following capabilities:

- Internal timing or NMEA GPS timing for UTC synchronization of WSPR transmissions.
- RS232 input of the WSPR message.
- Line or microphone output.
- Symbol data output available to modulate a VXCO
- Low power consumption allowing battery operation

All the rage here are "LED" Christmas lights with "wall wart" power supplies with some fancy electronics to produce an amazing variety of light switching sequences.

In my neighbourhood "Light Wars" broke out earlier in the Christmas season - everyone seemingly trying to outdo everyone else with the brilliance of their festive displays.

Outdoor arrays seem to make pretty reasonable TX antennae.

Not good news for the poor QRPp WhiSPeRer :( I reckon my noise floor has risen by 3 to 6dB!

Hey Ho, c'est la vie!

First of all, I wanted to report that the site changes made over the last month have helped stability considerably. Things seem to be running much more smoothly, resulting in far fewer load spikes (which were causing timeouts when posting spots as well as viewing pages).

I will be on holiday from Saturday the 17th through the 31st, and I will be pretty far out of touch for most of time. I don't anticipate any problems while I'm gone.

I want to thank Trevor G0KTN and Stu K6TU (ex N6TTO) who have been helping with the site administration. Those two are the best points of contact for site issues while I'm gone. Stu has also offered to help with some future site enhancements. We've talked about a bunch of things we both would like to see done, and it will be great to have some help on the programming side.

I see Pavel, CO6WT (below), also just offered to help with some of the analytics, which is also something Stu and I have talked about. Thanks, Pavel, though I probably won't have time to work with you too much until January.

Folks I have been working with php for some years now, and reading old blog posts and thinking a little I can make charts or graphics for wspnet site...

Lets say a interface that let me pick another call and a time range (predefined, say 24 hours, a week a month a year) and plot in a graph for statistical & propagation means...

I only need a sample of the REAL wspr database table (structure and some data) for program the necessary pages and integration with drupal, and in this old/new year holidays I can push it to almost end... (if beers and XYL let me do so...)

Hello folks, as you may noticed, CO7WT (me) is on the air with async logs uploads, so, not only check online/real data, you may review data of 24 hours reports, as I upload the logs of the local night in the post hours; that's because I have internet connectivity only on my work place.

Locator FL11BJ, TRX FT-80C, Power 10W

I had RX some interesting stations some VK, some PY2 some JQ2 and USA and Europe on regular basis... activity mainly on 30m night time (aprox 0300Z to 1200Z)

Sorry for my English. 73.

I let the WSPR run a couple of hours on 20mtrs today, just to test the reported QRG's. I checked my TX QRG accuracy & stability before and after the data collection to be within 2 Hz.
I expected to get a symmetrical Gauss distribution but that was not the case. Please look at the frequency deviation of total 41 stations with 270 spots. The mean freq deviation spot of each station is plotted. Only 16 out of 41 stations had a max deviation of + and - 4 Hz.

Time to check the TX folks or use the freq correction in Version 2

73/Bram

remark big ears SM0FLY DL2ANV they must have low ref noise and excellent antennas.
I am using a PE1NNZ SI-570 Beacon with 10Db att at output into W3DZZ at 10m.
I did not change manually the power in the data base it is 10mW.

1 mWatt +0dbm Test
Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az
2009-12-12 16:34 ON8DC 3.594067 -20 0 JO21be 0.001 G0KTN IO81ti 452 275
2009-12-12 15:58 ON8DC 3.594066 -15 0 JO21be 0.001 DL2ANV JO33tc 320 47
2009-12-12 15:58 ON8DC 3.594068 -23 0 JO21be 0.001 G0KTN IO81ti 452 275

2009-12-12 12:46 ON8DC 7.040058 -23 0 JO21be 0.001 HB9TMW JN36gq 531 160
2009-12-12 12:34 ON8DC 3.594066 -14 0 JO21be 0.001 DL2ANV JO33tc 320 47
2009-12-12 12:16 ON8DC 7.040155 -12 0 JO21be 0.001 DK3SML JN49sf 443 117
2009-12-12 12:16 ON8DC 7.040157 -22 0 JO21be 0.001 HB9TMW JN36gq 531 160
2009-12-12 12:06 ON8DC 7.040058 -24 0 JO21be 0.001 HB9TMW JN36gq 531 160
2009-12-12 11:56 ON8DC 7.040157 -22 0 JO21be 0.001 DL8BB JO41ul 389 83

wspr in africa seems to be a desert area....rarely do i see a participant here.how sad.

Listen on 30M with Yaesu FT-950. Antenna: Magnetic-loop, inside the house.

Along with the server move last night, I have begun to make some structural changes to the spot database to address some scalability issues and pave the way to support more data mining & analytics on the site. The major change is that I am in the process of separating the spot database into two tables: a realtime "live" table which will be limited to some recent history (I plan to start with 14 days), and an archive table containing the full history. Spots will go into the live table, which will be used for the standard database query page. New spots will migrate into the archive table in batches, every 30 minutes for now.

By separating the transactional "live" data, it will be easier to add more sophisticated search features to the archive database (date ranges, wildcard matching on calls (e.g., VK*), path analysis, extraction of data for download, etc.) without locking things up for new spots and auto-refresh pages. It also makes it easier to back up the archive without locking things up for new spots.

Many thanks to Rafael Haag, PY3FF, for translating the WSPR 2.0 User's Guide into Brazilian Portuguese!

The following link has been placed on the WSJT/WSPR web site:

http://www.physics.princeton.edu/pulsar/K1JT/WSPR_2.0_User_Portuguese.pdf

-- 73, Joe, K1JT

My name is Andrew. I was born in 1959. I built my first shortwave radio about 1974. I've been a ham for just about 20 years (It is time to renew, actually.) I had great fun with packet radio in the early 90s. In August of 2009, while vacationing in Good Hart MI, I was scanning the bands for anything interesting, and found a type of FSK I had not heard before. It was extremely narrow bandwidth. So narrow, that I had trouble discerning with my ear that it was any kind of data at all. It was heard on LF, about 290 kHz, too. Very strange, I thought. I recorded the signal, took it home and downloaded it to PC where I could view the waveform. Indeed, it was data.

Flash forward to November 30th, when I learned of something called WSPR. Aha! I downloaded the program, poked at the User Interface for a while, and finally read the user manual. In no time, I had decodes! How exciting.

This technology combines many areas of interest for me: Low power, beacons, and data over radio to name a few.

My current set up is RX only: Eton E1 radio and an Acer Aspire One netbook/laptop.

Thanks to Michel, F1ERG, a French translation of the WSPR 2.0 User's Guide is now available. The following link has been placed on the WSJT/WSPR web site:

http://physics.princeton.edu/pulsar/K1JT/wspr.html

Now is a good time to mention that translations into other languages will be very welcome, and I will be happy to post them on the web site as well. If you are interested and would like a copy of the original MS Word file in English, please let me know.

-- 73, Joe, K1JT

Hi all,

I think evry one have had one.
I did decode: 28 nov 2009 at 0904 -21dB 0.9DT 144.489470 -1Drift JT1/HL4LFX 53.
A unknown Ham from South Korea in Mongolia on 2 meter !!!
This is indeed a very strange one...Hi Hi Hi

Keep on wishpering with a smile
' 73
Peter , PE1DCD

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