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SeaTTY is designed to receive weather reports, navigational warnings and weather charts transmitted in RTTY, NAVTEX and HF-FAX (WEFAX) modes on longwave and shortwave bands. Additional hardware is not required - you need only a receiver and computer with a sound card. Minimal requirement for computer speed is about Pentium-100.

Signal speed and frequency shift are selected via the "Speed" and "Shift" menus respectively. Weather stations use 50 Baud speed. They commonly use 85 Hz shift in the longwave band and 450 Hz shift in shortwave bands. Amateur stations usually use 45 Baud speed and 170 Hz shift and commercial stations normally use 50 Baud speed and 170 Hz shift.

The program writes all received symbols in a raw log file in the "RAW_LOGS" folder. The name of a log file is date-stamped. For example, "01-10-08.TXT" is the raw log file for 08 October 2001.

All weather messages start with a "ZCZC" sequence and finish with a "NNNN" sequence. SeaTTY finds these sequences in the symbol stream and writes the messages separately in the "Messages" folder. The name of a message file is time-stamped. For example, "011121-225525.TXT" is a message saved at 22:55:25 on 21 November 2001.

License information: Free 30 Day Trial

This download is the free trial version of SeaTTY. The full version can be purchased for around $45.00 USD.