I repeated direction finding during daylight to minimise any skywave errors and this places 1624kHz emanating from the area of Rostok, Germany.
This is probably from Marinefunksendestelle Hohe Düne – within Rostock (Marinestützpunkt Hohe Düne, Warnemünde area)
Located at the northeastern edge of the Hohe Düne naval base, it has three antennas served by around five transmitters with power between 1 and 2.5 kilowatts, radiating in F1B, STANAG 4285, and SSB voice modes, fed remotely from the naval communications center in Glücksburg. It’s the smaller of Germany’s two Baltic transmitter sites, apparently used mainly for
near-range (North Sea/Baltic) coverage.
https://wiki.utdx.de/index.php?title=Marinefunksendestelle_Hohe_D%C3%BCne
Google maps: https://maps.app.goo.gl/J2ZRMDVGiiAr9Cnu9 (also visible from Streetview) 54.185N 12.132 E
Note this signal is centred on 1624kHz but is listed with a nominal carrier frequency of 1622.2kHz
Steve Whitt, MWCircle iog (2026-07-25)