OK DX RTTY Contest

A one-day Baudot RTTY contest on the third full weekend of December, Saturday 0000-2400 UTC, exchanging RST and CQ zone.

Rules at okrtty.crk.czThe rules are the sponsor's. This page holds the dates and the facts.

When it runs

Third full weekend of December

0000Z → 2400Z Saturday

Times are UTC, as the sponsor states them.

Next runnings

0000Z Sat 19 Dec → 0000Z Sun 20 Dec · 24h2026
in 78 days
0000Z Sat 18 Dec → 0000Z Sun 19 Dec · 24h2027
in 442 days
0000Z Sat 16 Dec → 0000Z Sun 17 Dec · 24h2028
in 806 days
0000Z Sat 15 Dec → 0000Z Sun 16 Dec · 24h2029
in 1170 days
0000Z Sat 21 Dec → 0000Z Sun 22 Dec · 24h2030
in 1541 days

Operating

Modes: RTTY Baudot
Bands: 80m40m20m15m10m
Exchange: RST + CQ Zone.
Power categories: High PowerLow Power 100 W
Logs: Cabrillo
Who can enter: Anyone, anywhere.
The rules state no entrant clause. The exchange is RST + CQ Zone with no home-country distinction and the categories are open, so worldwide is the strong reading -- but it is a reading, not a quote.

Where this comes from

Checked against the sponsor: Yes. The rule on this page was read off CRK's own published rules. Link last confirmed 2026-08-18.
What the source says: okrtty.crk.cz (OK DX RTTY Contest, English rules): '1) Date: 00:00 UTC to 24:00 UTC Saturday, 3rd full weekend in December.' '2) Mode: RTTY - Baudot'. '3) Bands: 10, 15, 20, 40 and 80 meters'. '6) Message: RST + CQ Zone'. Categories are High Power (over 100 W) and Low Power (under 100 W). Logs are due 'not later than 7th day after the contest'. The site's own news item independently gives the 2026 edition as '19. 12. 2026, 00:00-24:00 UTC'.
Recorded caveats: TWO PROBLEMS IN THE SPONSOR'S OWN TEXT, BOTH RECORDED RATHER THAN RECONCILED. First, the news item announcing the 19 December 2026 edition prints 'Deadline for log upload: 26. 12. 2025 23:59:59' -- the wrong year for a 2026 contest. Second, that 26 December date is not what the rules' own seven-day interval produces here: this catalog stores the end as 24:00 on the Saturday, i.e. 00:00 on the Sunday, and seven days from there is 27 December. log_deadline_days is therefore left unset and both statements are quoted, the same treatment given to JARL's All Asian DX Contest. ATTRIBUTION CAVEAT: neither the English nor the Czech rules page names an organising society. The sponsor is recorded as the Czech Radio Club on the strength of the crk.cz hosting domain and the okrtty-at-crk.cz log address, and that inference is stated here rather than hidden. BLOCKER: okrtty.crk.cz serves a TLS certificate issued for default.web4u.cz, so rules_url is http:// deliberately.

Something wrong? How to report it — a link to the sponsor's own page is all it takes.

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