TrueTTY ham radio digital communications software A program for amateur radio digital communications via a sound card. Supported modes are RTTY (Baudot code), ASCII (7 or 8 bits), PSK31 (BPSK and QPSK), AMTOR-FEC (SITOR-B, NAVTEX), MultiFSK-16, HF- and UHF-PACKET (AX25), DTMF. No Cracks, No Warez - Use legal software