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New FT4 WSJT Protocol

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    New FT4 WSJT Protocol

    Soon after the "FT8 Roundup" held on December 1-2, 2018, we started serious work on a faster, more contest-friendly digital mode that can compete with RTTY-contesting QSO rates while preserving many of the benefits of FT8. The result is FT4 -- a new digital mode specifically designed for radio contesting.

    Over the past month a small group of volunteers have been conducting on-the-air tests of FT4. The early tests were very successful and helped us to make a number of important design decisions. We believe
    FT4 has considerable promise for its intended purpose.

    We'll soon be ready for testing by a larger group. If you might be interested in participating and offering your considered feedback, please read the descriptive document "The FT4 Protocol for Digital Contesting", posted here:

    http://physics.princeton.edu/pulsar/...4_Protocol.pdf

    We plan to post downloadable installation packages for WSJT-X 2.1.0-rc5 on April 29, one week from today. The document linked above includes

    - Instructions for installing WSJT-X 2.1.0-rc5 and FT4 configuration

    - Operating instructions for FT4

    - Basic description of the FT4 protocol, modulation, and waveform

    - Detailed sensitivity measurements for FT4 under a wide variety of
    simulated propagation conditions

    - Schedule for upcoming test sessions

    Please consider helping us to make FT4 a successful mode for digital contesting

    With best wishes and 73,

    -- Joe (K1JT), Steve (K9AN), and Bill (G4WJS)
    73 Al 4L5A
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    #2
    FT4 Video Presentation


    73 Al 4L5A

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