Alexanderson Alternator At Grimeton in Sweden will be making 2 test transmissions on 17.2 Khz, watch live on you tube.
https://alexander.n.se/alexanderson-day-2020/?lang=en
Alexanderson Alternator At Grimeton in Sweden will be making 2 test transmissions on 17.2 Khz, watch live on you tube.
https://alexander.n.se/alexanderson-day-2020/?lang=en