[ICOM] ic 756proll and AEA MM3 MORSE

[DELSONCOMM at aol.com]

Hello Group 
i like to ask about the  AEAMM 3 morse machine, in order to connect it to the 
proll 
on the AEA MM3 on the back there is a -keyed and + keyed 
can any one let me know what the proll will take? + or — in order to connect 
it 
many thanks for the info 
Ody 
pa1/4z4ka