Message averaging is provided for situations where single transmissions are too weak or signal enhancements too sparse for a signal to be decoded. A new, highly reliable list-decoding technique is used for messages that contain previously copied message fragments. Submodes are provided with a wide variety of tone spacings and T/R sequence lengths 15, 30, 60, 120, and 300 s. Q65 uses message formats and sequencing identical to those used in FST4, FT4, FT8, and MSK144.
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