Tuesday, May 17, 2011
WSPR Timing issues...
I reset the time on the PC and hey presto, new spots appeared! So, I went checking...
These are some of my decodes before I reset the time. Notice the DT column...I had no idea what this was before but it stands for the 'Difference in Time' between you and the station you are hearing. As you can see above, most are roughly -2 seconds out.
I know that perhaps conditions improved around sunrise but to go from what looked like good signals in the colour window with no decodes to plenty of decodes after resetting the clock certainly suggests to me that timing was a factor.
It might also explain why sometimes I also see some signals on say 28 MHz but get no decodes.
As suggested in the WSPR forum, I downloaded Dimension4 and installed it.
For a PC running Windows 7, you have it run it as an administrator. Install Programme....In the Start Menu, right click on the programme logo...Select Compatibility...Under Privilege Level, tick the box 'Run this program as an administrator' ........click Apply....then OK
Run the programme and it should now keep your PC time updated.
Looking at the advice on the forum, they seem to suggest that signals need to be within 2-3 seconds. Hopefully, this will stop the problem.