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rtty psk31 operation without pc connection

PSK/RTTY HF digital mode USB interface MFJ-1204 Are you interested in operating HF digital modes such as PSK or RTTY? Then you need a USB interface for your radio to PC ...

Icom IC-7300, Using Digital Modes PSK/RTTY/FT8 The answer to the question: "What soundcard interface do I need?" The 7300 is