Chinese Military, ENIGMA designator M89, info here: http://www.numbersoddities.nl/N&O-245.pdf Search for M89, and the callsigns you heard, they are in this file. Also, check out the ENIGMA Control List: http://www.signalshed.com/docs/ENIGMA%202000%20Active%20Stations%20List%20V1.3.pdf Have fun. Kurt