New Longwave TX from October 2024 in Finland.

[Kalee20]

...even on a clear channel 1W would need a massive aerial at 252 kHz.as a 1/4 wave is nearly 1.2 km!

Erm... I make 1/4 wave at 252kHz equal to 298m, a lot different to 1.2km!

Even a half-wave dipole would still be only 596m total... impractical for most of us but not quite so much as you make out!