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TrueTTY ham radio digital communications is 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-PACKET and UHF-PACKET (AX25) are supported in KISS-TNC emulation mode. SELFEC SITOR, AMTOR-ARQ (SITOR-A) and DTMF-code decoding is also possible.

No additional hardware is required. You simply need a transceiver and computer with a sound card. Alternatively, you can use a simple circuit for PTT-control, which gives fast and convenient frequency control and has lots of macros for transmitting.

The program can cooperate with RZ4AG AAlog logger. Other features include added macros and DDL for data exchange between programs, AX25 decoding, Beacon mode, and DTMF-code decoding.

The Save Setup and Save Buffer commands are disabled in the trial version of this program.

License information: Free 30 day trial

This download is the free trial version of TrueTTY. The full version can be purchased directly from the author for around $39.00 USD. See program documentation for details.