[digitalradio] MFSK 'type' very narrow -100 hz bw- mode just seen , what is it ?? 14.072 Mhz

[Graham]

I may allready have it , but what is the mfsk type of mode , looks to  
be only 100 Hz wide , just noticed it on the digipan waterfall  while 
running psk31 , would of been round  14.072 Khz 1815 hrs gmt 

Tnx - G ..