But this time I was wondering, if there are many operators, that use much more than 5 watts.
To my surprise only a few operators used 10 to 1000 watts.
The WSPR spots are collected on 10 meters in 24 hours.
I chose 24 hours to include all operators, that skip from band to band, following the changes in propagation, in all the parts of the world.
The interval lasted from 9:02 utc on the 20th of February to 9:00 utc on the 21st.
I selected the 10 meter band, because in the days before, I made an analysis of spots on 10 meters.
The table shows the number of spots that were made in each power category from
1 mW to 5000 mW (5 W) (QRP)
and the number of spots that were made with 10 to 1000 watts.
In the power categories from 1 milliwatt to 5 watts, most spots were made in the category of 5 watts.
This is 42 % of all spots.
I am pleased to see that many operators use 200 mW* or 500 mW.
200 mW in 15% of all spots and 500 mW in 16% of all spots.
It's good to see that only a few operators use 10 W to 1000 W. (See also "one kW")
Not all spots that show up in the database with 1000 W, are actually made with 1000 W.
In the past I have seen WSPR spots from an operator that used a homebrew QRP rig, that he proudly showed on QRZ. But the setting in his WSPR program was wrong. He discovered the mistake.
Later the spots showed a power of 2 watts in stead of 1000 watts. hi.
* Did you know that 200 mW in WSPR can be compared with 4 Watts in CW and 80 Watts in SSB.
So with 200 mW in WSPR you can see where you 4 watt CW signal could be heard. hi.