LF never ceases to amaze me!
Against all odds, your signal was providing aural copy in CW mode
and a filter bandwidth of 500 Hz around 04:00 UTC.
From: Roelof Bakker, pa0rdt
Location: Middelburg, Zealand SW Netherlands, 51 30 02 N, 03 36 02 E
Receiver: PERSEUS, CW mode, Filter 5oo Hz, centre frequency 400 Hz.
Aerial: pa0rdt-mini-whip, 5 metre up in a hawthorn tree.