An update of software HDSDR allows to extract fieldstrength values into a file (depending on settings several per second). These values in dBm are more precise than S/N-values from skimmers in the RBN, because they eliminate the unknown variable for N=noise. Additionally they are available for every transmission, be it CQing OR calling in S&P - as well as giving field strength values for SSB signals, too.

As a first impression here are values for TopTen stations extracted from our SDR recordings for 80m - the band having the comparatively smallest influence of skip and beam direction. Listed are values from around 1900, 2100 and 2300 UTC. Nearly all are plus/minus 15 minutes, only a few plus/minus 20 minutes. Values for CW and SSB can not be compared against each other. Just in case: The bigger the figure behind the minus sign the weaker the signal ;-)
A zero means that there were no QSOs in this mode during the time period.

Used settings differing from default values: 'Interval' 250ms instead of preset 1000ms (in mini menue appearing after INS which then allows to start a measurement by OK)
S meter settings: 'Options'>'Calibration Settings'>'S-Meter Calibration' - then 'Attack Time' 100 und 'Decay Time" 250ms (otherwise there happens a smoothing over too long a period)
Further experiments with time settings wished for.

!!! Important disclaimer: Please no hasty conclusions about output power. There is still the influence of antennas and ionosphere. Also more experimenting with the millisecond settings is necessary to deal with the myriad of data.

But of course this software option looks at least interesting from a contest adjucation perspective.

CW values:

SSB values: