Observed arrival · 2026-08-30

JTDX Contest Edition Gives Amateur Radio Decoders a Second Shift

ce3tsk.com Observed source

Editorial interest 82/100 Selection signal · not a rating of the site

A contest-focused FT8 decoder that reports more messages while deciding replies early enough to keep up with transmissions.

Landing page captured for the 2026-08-30 issue.

Field notes

The project uses a split pipeline: one decoder phase must settle the contest reply before transmission, while additional passes run during the operator's transmit interval. Its page reports tests across 240 consecutive 15-second periods on 20 meters, using 12 threads on an AMD Ryzen 7 5800H, with the recommended preset reaching 6,220 unique messages and 95.8% of the union decoded by all engines.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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