I was pleased to hear Catalan on 621 kHz during one of the local breaks of RNE one morning in March 2023. This news bulletin belonged to RNE Islas Baleares / RNE Illes Balears, the only Catalan speaking station on the frequency. Usually RNE Ávila has the upper hand on this frequency, but not so this particular morning.
The signals of RNE Islas Baleares on 621 kHz originates from a 40 kilowatt transmitter located at Marratxí outside Palma, the largest city on the islands. Manuel Delgado Cañizares confirmed my reception with a full data electronic QSL card.
Arild's DX Diary 