He reduced the power from day to day.
Hajo wrote me that the 4 last spots with 1 milliwatt were actually made with 0.5 milliwatt.
In the WSPR data Hajo uploaded the spots of 0,5 mW as 1 milliwatt, since this is the lowest value that can be used. (1 mW is 0 dBm)
Because my excell sheet can not calculate with a power lower than 1 milliwatt, I left the values for 1 milliwatt in the analysis of yesterday .
But today I calculated the lowest possible power for the value of 0.5 mW by hand
and made the next table exclusively for the spots with 0.5 mW.
The calculated lowest possible power is, in some spots, only one step lower.
This table show 4 spots in stead of 3.
The table below that I made yesterday, does include spots of 400 km or more,
so it does not include the spot by HB9JAQ
|Click to enlarge|
The lowest possible power is calculated from the power sent and the SNR.
The lower the lowest possible power, the better the propagation.