M12 repeats in 20 minute intervals, but if it’s a null message the last broadcast will not send just like E07. M12 sends Morse at 15 wpm until the 3/4 figure decode key then switches to either 25 or 29 wpm.
M12a is the ID when more than one message is sent
Recording Sample
Station Structure
ID (###) 3x, number of messages usually 1 (#) [Both Repeated 2 minutes], 3/4 figure decode key, Group Count (##) [Repeated Together 2x] 5 Figure Single Groups, ends 000 000
Null Format: ID (###), then 000, repeats for 2 minutes
Station Summary
Related Stations: E07, G07, S07, V07, XP, XPA, XPA2
Name: None
Activity: Active
Emission Mode: ICW, MCW
Believed Country of Origin: Russia
