Just came across a station of 3597KHz CW sending a continuous evenly spaced stream of single letters, no numbers.
No breaks or ident given, tuned for 10 minutes with a report of 539 to 559, monitored between 1535-1545z. (Still going at 1630z).
Sent with an electronic/computer keyer, not hand sent.
My logs show that this is a former M89 frequency, Chinese military.
Sample of text copied: "KLSNDCLLODXMXKTKFCKIDLTGCUXUKDNWMDRRWAMUK" etc, ongoing.
Last M89 logging for 3597KHz CW was (3JWV de QH4P roundslip) on 09n Sep, 04 Nov and 16th Nov 2019.