Excellent and self-explanatory

The system is already in use for a long time and is very reliable. Since the station areas are quite small, the local forecast is quite accurate.
Note, however, that the remote station is received only when the batteries are reasonably stable. VARTA fake flea market fall quite rapidly to 1.4 V, then nothing works. In cold weather it is even worse.
However, the base station then receives weather data nor properly.
"Satellite-based" is of course complete nonsense. In the house no satellite would receive. The weather data is sent on the frequencies for Pager, on which the fire departments send their messages. But the many stations in the small cells are actually synchronized via GPS signal, so they do not send all at once. Each transmitter has a time slot.
The outstations send either 433MHz, (where the radio amateurs have the right of way), or 868 MHz.
Anyone traveling abroad, procured better a weather station, which covers large areas. These devices operate in the long-wave range. However, the smallest cell already covers then from Cologne to Dortmund. So much imprecise. The weather service is Meteotime in Switzerland.