[Fourlanders] New digital contest protocol/mode coming

[P.T. Corners (Bob)]

(from the wsjt-devel reflector)

Bob
K4VBM

To: WSJT-X users interested in testing FT4
From: K1JT, K9AN, and G4WJS

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/k1jt/FT4_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)



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