Thanks for that info, Robert. For those of us who are less fluent in Polish, the page title "Planowane przerwy w nadawaniu programu" translates to "Scheduled breaks in broadcasting." The directory it is in is named /czestotliwpsci/ which means "frequency," and it also contains lists and maps of Polish Radio's FM networks' coverage areas.The entries for 11 and 12 October include these relevant items:
11.10.2022 08:05 - 18:00 RCN Solec Kujawski -Program 1 na falach długich - (225 kHz)
12.10.2022 08:05 - 18:00 RCN Solec Kujawski -Program 1 na falach długich - (225 kHz)
...where Solec Kujawski is the town of 15,000-plus people where the station is located, and "na falach długich" literally means "on long wave."
The station uses a two-tower directional array driven by up to 1 MW of power from a Thomson 1200 kW MOSFET transmitter that combines three 400 kW RF amplifier modules to achieve maximum output power, but can operate at reduced power with one or two modules out of service. The masts are spaced a quarter wavelength apart, and are each approximately that same height (one is a little shorter). The masts are grounded to their own buried radial systems at the base, and are shunt fed. As an old broadcast engineer myself, I'd like to know more about the feed arrangement and exactly what directional pattern results from it; I've read conflicting details on that subject.