2017-10-28, 15:25
We need to look at the signal/ noise ratio from stations first. Noise here means signals not from real strokes.
I just used the strikes/ signals plot and then the stations list to check the signals from some of the stations in the right bottom area, where the stations are concentrated that have low "efficiency".
I have not made a complete investigation, but a high percentage of them (but not all) clearly has a serious noise problem. Often this is noise with a frequency larger than 25 kHz. A lot of the signals are so terrible that I doubt that the owner of the station has looked much at them, or if he has, he is not able to interpret what he sees. Obviously, these stations are not contributing to the network. Identifying these stations has to be done by hand so it would take some time, but then the owners could be contacted and advised to improve the performance. If they don't, their signals could be ignored directly.
Another conclusion I would draw: increasing the number of stations without attacking this problem at the root is not advisable.
I just used the strikes/ signals plot and then the stations list to check the signals from some of the stations in the right bottom area, where the stations are concentrated that have low "efficiency".
I have not made a complete investigation, but a high percentage of them (but not all) clearly has a serious noise problem. Often this is noise with a frequency larger than 25 kHz. A lot of the signals are so terrible that I doubt that the owner of the station has looked much at them, or if he has, he is not able to interpret what he sees. Obviously, these stations are not contributing to the network. Identifying these stations has to be done by hand so it would take some time, but then the owners could be contacted and advised to improve the performance. If they don't, their signals could be ignored directly.
Another conclusion I would draw: increasing the number of stations without attacking this problem at the root is not advisable.
Stations: 1836