DigiMaster MiniProSC.

Our most poular DATA only interface by far.
Digital DATA Interface: USB Computer-Radio Interface for PSK31 and ALL otherAFSK DATA modes.
Built in HI SPEC, Hi performance audio codec / soundcard and pro quality isolating transformers gives far superior performance over SignaLinks.
Ham radio DATA interface supports ALL AFSK data mode software. HRD's DM780, MixW, Digipan,Easypal, WSPR, JT65 etc and ALL AFSK DATA modes, inc psk31, sstv, rtty, contesia, olivia and dozens of others. NOTE: To run some software you may also need a CAT interface.