[CW] coded groups on 6.9562 MHz

[Henry Meils]

Apropos CW on HF, I heard machine sent coded groups of 5 letters at about 25 
WPM on Tues.
8th Sept, 1640 to 1647Z on 6.9562 MHz,  RST 599+10-15db  (QSA 5) at my 
Copenhagen QTH.
Text groups were still being sent when I stopped copying  .. I didn't listen 
long enough to copy station ID, if any.

I believe I have heard the same type of transmission before but don't recall 
if same frequency. Might be in my SWL log.

The last text group I copied  was prefixed with
"nr 89 S09J88SD854 1986 BT ..... .....

Anyone know what this is ?

R/O Henry F. M., OZ1UF,