Radio Marabu is off air for about 3 weeks for technical modification according to announcement on their website dated November 11th:
“Conversion break. RADIO MARABU will not be able to hear on short wave 6150 for about 3 weeks. Our internet stream and of course the broadcast on OS Radio 104 comma 8 remain unaffected. Some technical innovations are incorporated, i.a. a new power amplifier, which should further improve sound and reception. Wait, drink a water. We’ll be back soon.
Europe 24, shortwave 6150, Radio Marabu” (translated from German)
(Alan Pennington via BDXC-News io group)