KB9AMG's blog

Using the latest full day of wspr spots, I created a list that shows which grid squares appear in the most spots. Yesterday, the 10 most active grid squares were:

JN49 45307
JO21 36559
IO91 36484
JO22 33888
JO31 29718
JO42 28409
JN58 26031
IO93 24243
JO32 22065
IO83 21285

The complete list is at http://mardie4.100webspace.net/wspr_grids/index.html

Added some new WSPR stats to my website. It is similar to the RBN section and has some advantages over the top wspr spots/spotters stats which are only updated monthly. The new WSPR stats section provides daily stats for all stations (tx/rx, SWL, or tx-only), uses full callsigns (multiple /'s, dashes, and underscores), handles 4 or 6-digit grid squares, and adds the power level (dBm) to transmit stations.

Look for "WSPR Spots stats" near the bottom of the webpage at http://mardie4.100webspace.net/

Just by chance I was checking 10m around midnight and heard Dave, W1VR (EL98it) 5 times between 0552z and 0628z. First three decodes were strong at -6,-7, and -6. Finished with -24 and -24.

I was heard once at 0600z.
2015-11-12 06:00 KB9AMG 28.126126 -29 0 EN52tx 5 W1VR EL98it 1698 156

dxmaps.com was showing a sporadic E cloud in northern Georgia.

Other nearby stations WJ9H (EN53ga) and K9AN (EN50wc) had already been reporting W1VR for about an hour by the time I tuned in.

Sporadic E is an interesting propagation mode.

Had some interesting WSPR reports on 15m with Hisa, 7L4IOU, on 15m this morning.

After checking VOACAP and doing some research, I think these were long path reports. This would be a record WSPR distance for me at 30073km. Next highest is VK6XT on 20m at 22509km.

2015-06-19 14:44 7L4IOU 21.096056 -9 0 PM95wr 2 KB9AMG EN52tx 9991 33

2015-06-19 14:48 KB9AMG 21.096043 -26 0 EN52tx 5 7L4IOU PM95wr 9991 323

2015-06-19 15:04 7L4IOU 21.096057 -23 0 PM95wr 2 KB9AMG EN52tx 9991 33

The last 2 months have been very active for WSPR. Excellent server uptime and improved signal decoding (K9AN decoder) have really helped the spot numbers grow.

January 2015 was the first time there was over 8 million spots for the month. January had 8,037,932 spots. Prior to that, the closest we came to 8 million was in March of 2014 which had 7,917,817 spots.

Had an unexpected spot from VK6XT on 20m late this afternoon:

2014-12-27 23:26 KB9AMG 14.097140 -22 0 EN52tx 5 VK6XT OF86td 17546 286

other stations heard by VK6XT at the same time:

2014-12-27 23:26 K4COD 14.097164 0 0 EM73sc 2 VK6XT OF86td 17969 262
2014-12-27 23:26 K4RCG 14.097148 -16 0 FM08xl 2 VK6XT OF86td 18520 285
2014-12-27 23:26 KE7TYT 14.097112 -23 0 DN40bv 5 VK6XT OF86td 15631 264
2014-12-27 23:26 HB9CZF 14.097079 -23 0 JN47ch 1 VK6XT OF86td 14081 103
2014-12-27 23:26 VE3PLE 14.097022 -12 1 FN25bg 5 VK6XT OF86td 18302 313

A large X1.6 solar flare occurred while I was listening on 10m. I saved a screenshot of the wspr screen to show the wavy signals that immediately followed the start of the solar flare at 1402z.

Files are here: http://mardie4.100webspace.net/pics/

One file is the screenshot of my wspr screen. Notice the wavy signals at 1404z and 1406z.

The other files are a graph of the X-ray flux from the NOAA website. The flux rose very quickly at the start of the flare.

I've been very surprised by what I've heard on 160m this past week.

I heard VK2KRR this morning, and VK6DZ on the 7th, 10th, and today.

A few years ago, I remember seeing my cw skimmer decode a vk6 station on 160m. Up until now, I thought it was just a bad decode or some harmonic from another band on the sdr-iq.

I'll be listening on 160m from about 0400-1330 for the next 4 days. 12th through the 15th. Hope to get some more VK decodes and add them to the list at the end of the week.


Made some changes to the 2-way wspr reports at my website http://mardie4.100webspace.net/
added some .html files to make it easier to browse the reports. Use to be just a directory list of files.

I've been trying for some time to get my SDR-IQ to decode 2 different modes at the same time using the 2 channel stereo demod in SpectraVue. Finally got it working today. For awhile I had it somewhat working and I could send the audio from two different frequencies (on the same band) to 2 different programs (wspr/psk/jt65a) but the audio was always mixed which made WSPR decoding a nightmare with jt65 or psk signals mixed in.

It took my computer about 2.5 hours to crunch all the WSPR data for October. Over 3.6 million spots resulted in 219,345 unique records. The top WSPR spotter for October was DK6UG spotting 2445 stations. The most spotted station, spotted 2213 times, was VE6PDQ operating from both DO33 and DO34. Of the 219,345 unique spots for October, over a third were on 10 meters (78,410). 20m was close with 73,982. And 30m a distant 3rd at 34,105. The complete lists are posted at http://mardie4.100webspace.net/

After processing nearly 3.5 million WSPR spots from November, there turned out to be about 243,000 unique spots (based upon spotter, station being spotted, 4 character grid squares, and band). Stations WSPRing from multiple 4 character grid squares may have higher totals than those stations operating from just one grid square.

The top 10 stations spotted in November were: