Having had no response from a question regarding how well those who are running WSPR15 performs, compared to WSPR2 I decided to examine the Database. Checking 10,000 entries in order of distance.
We know the current longest distance decode was on WSPR2 power stated is RF to the antenna I believe.
VK1DSH WSPR2
2013-02-16 16:44 VK1DSH 0.475078 -29 0 QF44ms +47 50.119 F6CNI/BEV JN19qb 1683210459
The next longest decode used WSPR15 and high ERP.There were several decodes on the same day down to -34dB
WE2XGR/2 WSPR15
2013-02-05 03:46 WE2XGR/2 0.475813 -30 0 FN31ls +30 1.000 SV8CS KM07js 7602 4724
Next comes WSPR2 again several repeatable spots just a random reports shown.
DK7FC WSPR2
2013-02-02 03:36 DK7FC 0.475686 -25 0 JN49ik +30 1.000 WE2XGR/2 FN31ls 6099 3790
2013-02-02 04:00 DK7FC 0.475685 -24 0 JN49ik +30 1.000 D2XSH/17 FN42pb 5927 3683
Next very similar distances and WSPR2 again, repeated results.There were several decodes on the same night.
PA0O WSPR2
2013-01-18 02:00 PA0O 0.475780 -28 0 JO33hg +33 1.995 WE2XGR/2 FN31ls 5796 3601
SM6BHZ WSPR2
2013-01-18 00:32 SM6BHZ 0.475720 -19 0 JO57wq +27 0.501 WD2XSH/17 FN42pb 5768 3584
Just one decode of WSPR15 for the next one, I nearly missed it, there may be more like it but the overall picture should not suffer too much. This complete excercise is a look at the database for an overall picture, not a deep technical study, you can do that if you wish to.
G8IMR WSPR15
2013-01-18 03:16 G8IMR 0.475810 -34 0 IO90iv +33 1.995 W1VD FN31ls 5379 3342
We now get to shorter distances which are covered more often using WSPR15 just random reports shown here some are down to -38dB.
DL3NDR WSPR15
2013-02-18 21:16 DL3NDR 0.475820 -28 0 JN59no +27 0.501 TF3HZ HP94ad 2531 1573
LA6TPA WSPR15
2013-01-23 21:16 LA6TPA 0.475808 -36 0 JP54rl +10 0.010 F59706 JN07th 1999 1242
The same station does the same distance to the same station during the same session using WSPR2.
LA6TPA WSPR2
2013-01-30 21:40 LA6TPA 0.475673 -22 0 JP54rl +10 0.010 F59706 JN07th 1999 1242
I am not sure where to cause a stir here. The above are 2000Km all but for 1Km so on this occasion I will call everything under this the ALSO RAN reports, despite the power being used.
G4JNT WSPR2
2013-02-18 21:22 G4JNT 0.475737 -27 0 IO90iv +33 1.995 TF3HZ HP94ad 1904 1183
Another case of WSPR15 doing the same trip as WSPR2 during the same session but what do the S/N figures mean.
LA6TPA WSPR15
2013-02-07 22:16 LA6TPA 0.475822 -38 0 JP54rl +10 0.010 F5WK-W15 JN18hp 1838 1142
2013-02-16 22:16 LA6TPA 0.475803 -36 0 JP54rl +10 0.010 F5WK-W15 JN18hp 1838 1142
2013-02-16 22:00 LA6TPA 0.475802 -33 0 JP54rl +10 0.010 F5WK-W15 JN18hp 1838 1142
LA6TPA WSPR2
2013-02-16 22:56 LA6TPA 0.475731 -30 0 JP54rl +10 0.010 F5WK JN18hp 1838 1142
2013-02-16 22:52 LA6TPA 0.475723 -30 0 JP54rl +10 0.010 F5WK JN18hp 1838 1142
2013-02-16 22:54 LA6TPA 0.475723 -28 0 JP54rl +10 0.010 F5WK JN18hp 1838 1142
Back to WSPR2 for the next distance spot, everyday stuff really, very repeatable at these powers.
DK7FC WSPR2
2013-02-21 21:06 DK7FC 0.475688 -7 0 JN49ik +30 1.000 OH6JKN KP22xk 1789 1112
2013-02-21 21:12 DK7FC 0.475688 -2 0 JN49ik +30 1.000 OH6JKN KP22xk 1789 1112
2013-02-21 21:18 DK7FC 0.475688 -3 0 JN49ik +30 1.000 OH6JKN KP22xk 1789 1112
That is it, what I found in 10,000 reports in distance order, of course there are other reports of other stations between the distance markers chosen, otherwise the list would be huge.
Why do I call under 2000Km ALSO RAN reports? Well that is my next target and I am “wasting my time” I have a “tiny stupid antenna” and I run “pathetic QRP Power Levels”.
I don’t know how much further down the list after No.9999 I am, but I knew I was there, getting very close to these big boys. the results are repeatable too, just not as often.
G3ZJO WSPR2
2013-01-21 23:24 G3ZJO 0.475669 -27 0 IO92ng +7 0.005 OH1LSQ KP03td 1785 1109
2013-01-21 23:12 G3ZJO 0.475669 -26 0 IO92ng +7 0.005 OH1LSQ KP03td 1785 1109
2013-01-21 23:02 G3ZJO 0.475669 -25 0 IO92ng +7 0.005 OH1LSQ KP03td 1785 1109
What a great band 630m is.