SAQ, Grimeton Radio in Sweden, is planning a test transmission at 1000 UTC on Wednesday, February 6. The 1-hour broadcast will be made with a 200 kW Alexanderson alternator, basically a large electric generator which produces RF instead of low frequency AC. The frequency is 17.2 kilohertz. Not megahertz, kilohertz. That's low.
This is a radio museum with an original, Marconi-era, maritime coastal station in operating condition. The antenna is enormous. This transmitter is audible worldwide with the right equipment and low noise conditions.