While monitoring "S" this dasher appeared just up in frequency. About one dash per second. It seems to be either quite strong or gone as far as propagation is concerned. Disappears for a minute or so then returns. 8000.40 KHz 18DEC23 22:58z Airspy HF+ Discovery 60ft SE/NW longwire
https://youtu.be/fzvGWClQh9s?si=BPGTVjH8FR0WA5SQ