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YAESU FT - 1000/MP/MARK V (filed) interface - This one of numerous RTX - Sound blaster interfaces you can find on the internet, but this one include:
FSK KEYING to use with the RTTY port
DVS-2 to use the interface in AFSK mode, this include all digital modes + voice keyer
If you use AFSK mode you will probably need wide and narrow filters. With the classical MP this is not a problem, but with the MARK V (field) series, if you need wide filters you use the normal SSB mode, if you need narrow filters then you use PKT mode.
P.S. Thanks to S56A for help!
73 de Ted S57NDT