Problems with analysis of WSPR data

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G8JNJ's picture
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Joined: 2008/05/19 - 12:32
Problems with analysis of WSPR data

Hi All,

I’ve recently been looking at data I’ve retrospectively extracted from the WSPR database in order to try and perform a long tern analysis of propagation trends over the past year.

However I have encountered a problem. It’s almost impossible to know if a lack of reports on some days or at certain times is due to poor propagation, or simply that no stations are operating (transmitting or receiving) on the particular band at the times of interest. Either because they have gone QRT for the day or because they are frequency hopping and are operating on other bands.

Therefore I’d like to suggest that WSPR database / reporting mechanism is modified. So that it also records individual station transmit and receive timeslots even if they do not spot, or get spotted by, any other stations in that time period.

For example. The TX period could be included in in the same format as a spot received by another station. But without the S/N, drift, spotting callsign, Distance and Azimuth information.

e.g. 2011-11-0 08:46 G8JNJ/A. 28.126005 ______ 5 IO90hx_________________

And the RX period was in the same format as a normal RX spot showing the RX centre frequency but without the spotted callsign, S/N, drift, power, spotted QRA, Distance and Azimuth information

e.g. 2011-11-01 09:12 __________ 28.12610 ________________ G8JNJ/A _________

It would then be possible to extract the 'spotted' and 'non-spotted' reports in the same format from the database archive.