{
  "contest": {
    "id": "ok-om-dx-cw",
    "name": "OK/OM DX Contest, CW",
    "sponsor": "CRK / SARA",
    "sponsor_home": "https://www.crk.cz/",
    "country": "CZ",
    "summary": "The Czech and Slovak national DX contest, CW leg: 24 hours on the second full weekend of November, OK and OM stations sending a three-letter county code.",
    "modes": [
      "CW"
    ],
    "bands": [
      "160m",
      "80m",
      "40m",
      "20m",
      "15m",
      "10m"
    ],
    "exchange": "Non-Czech and Slovak stations send a signal report + a QSO number starting with 001; Czech and Slovak stations send a signal report + their three-letter county code.",
    "power_categories": [
      {
        "name": "High Power",
        "max_watts": null
      },
      {
        "name": "Low Power",
        "max_watts": 100
      },
      {
        "name": "QRP",
        "max_watts": 5
      }
    ],
    "log_format": "Cabrillo",
    "log_deadline_days": 7,
    "log_submit_url": "",
    "timezone": "",
    "local_rolling": false,
    "eligibility": {
      "scope": "worldwide",
      "verified": true,
      "note": "Rule 5.1 provides an exchange for 'Non-Czech and Slovak stations' and the categories are open to them, so entry is worldwide with OK/OM stations as the target."
    },
    "active_from": null,
    "active_until": null,
    "note": "The parenthetical deadline (22 November 2026, 2359 UTC) is the right date for the seven-day interval but 23:59 rather than the 11:59 that end-plus-7-days gives; the interval is the stated rule, so the interval is encoded. BLOCKER RECORDED, NOT WORKED AROUND: okomdx.crk.cz serves a TLS certificate issued for default.web4u.cz, so HTTPS fails validation and the rules are reachable only over plain HTTP. rules_url is therefore http:// deliberately; it is not an oversight, and the link checker will keep reporting it as such until the Czech Radio Club fixes the host.",
    "verified": true,
    "rules_url": "http://www.okomdx.crk.cz/index.php?page=CW-rules-english",
    "rules_url_pattern": "",
    "rules_url_archived": "",
    "rules_url_checked": "2026-08-18",
    "source_note": "okomdx.crk.cz (OK/OM DX Contest CW rules, English): 'The Czech Radio Club, CRK in cooperation with Slovak radioclub SARA'. '2. Contest Period -- Second (full) weekend in November, i.e. 1200 UTC 14th November - 1159 UTC 15th November 2026.' 'All bands, 1.8 through 28 MHz, WARC bands excluded'. '5.1 Non-Czech and Slovak stations: signal report + QSO number, starting with 001. / 5.2 Czech and Slovak stations: signal report + County code (three letters).' '11.1 Logs must be submitted to the contest sponsors within 7 days after the end of the contest - (November 22nd, 2026, 2359 UTC)'."
  },
  "rule": {
    "plain": "Second full weekend of November",
    "raw": {
      "type": "nth_full_weekend",
      "month": 11,
      "n": 2
    },
    "start": {
      "day_offset": 0,
      "time": "1200"
    },
    "end": {
      "day_offset": 1,
      "time": "1159"
    },
    "sessions": null
  },
  "next": [
    {
      "contest_id": "ok-om-dx-cw",
      "name": "OK/OM DX Contest, CW",
      "start": "2026-11-14T12:00:00Z",
      "end": "2026-11-15T11:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 23.98,
      "modes": [
        "CW"
      ],
      "submodes": [],
      "bands": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "1.8 through 28 MHz, WARC bands excluded",
      "sponsor": "CRK / SARA",
      "rules_url": "http://www.okomdx.crk.cz/index.php?page=CW-rules-english",
      "verified": true,
      "note": "The parenthetical deadline (22 November 2026, 2359 UTC) is the right date for the seven-day interval but 23:59 rather than the 11:59 that end-plus-7-days gives; the interval is the stated rule, so the interval is encoded. BLOCKER RECORDED, NOT WORKED AROUND: okomdx.crk.cz serves a TLS certificate issued for default.web4u.cz, so HTTPS fails validation and the rules are reachable only over plain HTTP. rules_url is therefore http:// deliberately; it is not an oversight, and the link checker will keep reporting it as such until the Czech Radio Club fixes the host.",
      "exchange": "Non-Czech and Slovak stations send a signal report + a QSO number starting with 001; Czech and Slovak stations send a signal report + their three-letter county code.",
      "country": "CZ",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-18",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2026-11-22T11:59:00Z",
      "uid": "ok-om-dx-cw-20261114T1200@contestcal",
      "start_date": "2026-11-14",
      "mode_families": [
        "CW"
      ],
      "band_families": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "12-24"
    },
    {
      "contest_id": "ok-om-dx-cw",
      "name": "OK/OM DX Contest, CW",
      "start": "2027-11-13T12:00:00Z",
      "end": "2027-11-14T11:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 23.98,
      "modes": [
        "CW"
      ],
      "submodes": [],
      "bands": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "1.8 through 28 MHz, WARC bands excluded",
      "sponsor": "CRK / SARA",
      "rules_url": "http://www.okomdx.crk.cz/index.php?page=CW-rules-english",
      "verified": true,
      "note": "The parenthetical deadline (22 November 2026, 2359 UTC) is the right date for the seven-day interval but 23:59 rather than the 11:59 that end-plus-7-days gives; the interval is the stated rule, so the interval is encoded. BLOCKER RECORDED, NOT WORKED AROUND: okomdx.crk.cz serves a TLS certificate issued for default.web4u.cz, so HTTPS fails validation and the rules are reachable only over plain HTTP. rules_url is therefore http:// deliberately; it is not an oversight, and the link checker will keep reporting it as such until the Czech Radio Club fixes the host.",
      "exchange": "Non-Czech and Slovak stations send a signal report + a QSO number starting with 001; Czech and Slovak stations send a signal report + their three-letter county code.",
      "country": "CZ",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-18",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2027-11-21T11:59:00Z",
      "uid": "ok-om-dx-cw-20271113T1200@contestcal",
      "start_date": "2027-11-13",
      "mode_families": [
        "CW"
      ],
      "band_families": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "12-24"
    },
    {
      "contest_id": "ok-om-dx-cw",
      "name": "OK/OM DX Contest, CW",
      "start": "2028-11-11T12:00:00Z",
      "end": "2028-11-12T11:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 23.98,
      "modes": [
        "CW"
      ],
      "submodes": [],
      "bands": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "1.8 through 28 MHz, WARC bands excluded",
      "sponsor": "CRK / SARA",
      "rules_url": "http://www.okomdx.crk.cz/index.php?page=CW-rules-english",
      "verified": true,
      "note": "The parenthetical deadline (22 November 2026, 2359 UTC) is the right date for the seven-day interval but 23:59 rather than the 11:59 that end-plus-7-days gives; the interval is the stated rule, so the interval is encoded. BLOCKER RECORDED, NOT WORKED AROUND: okomdx.crk.cz serves a TLS certificate issued for default.web4u.cz, so HTTPS fails validation and the rules are reachable only over plain HTTP. rules_url is therefore http:// deliberately; it is not an oversight, and the link checker will keep reporting it as such until the Czech Radio Club fixes the host.",
      "exchange": "Non-Czech and Slovak stations send a signal report + a QSO number starting with 001; Czech and Slovak stations send a signal report + their three-letter county code.",
      "country": "CZ",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-18",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2028-11-19T11:59:00Z",
      "uid": "ok-om-dx-cw-20281111T1200@contestcal",
      "start_date": "2028-11-11",
      "mode_families": [
        "CW"
      ],
      "band_families": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "12-24"
    },
    {
      "contest_id": "ok-om-dx-cw",
      "name": "OK/OM DX Contest, CW",
      "start": "2029-11-10T12:00:00Z",
      "end": "2029-11-11T11:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 23.98,
      "modes": [
        "CW"
      ],
      "submodes": [],
      "bands": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "1.8 through 28 MHz, WARC bands excluded",
      "sponsor": "CRK / SARA",
      "rules_url": "http://www.okomdx.crk.cz/index.php?page=CW-rules-english",
      "verified": true,
      "note": "The parenthetical deadline (22 November 2026, 2359 UTC) is the right date for the seven-day interval but 23:59 rather than the 11:59 that end-plus-7-days gives; the interval is the stated rule, so the interval is encoded. BLOCKER RECORDED, NOT WORKED AROUND: okomdx.crk.cz serves a TLS certificate issued for default.web4u.cz, so HTTPS fails validation and the rules are reachable only over plain HTTP. rules_url is therefore http:// deliberately; it is not an oversight, and the link checker will keep reporting it as such until the Czech Radio Club fixes the host.",
      "exchange": "Non-Czech and Slovak stations send a signal report + a QSO number starting with 001; Czech and Slovak stations send a signal report + their three-letter county code.",
      "country": "CZ",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-18",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2029-11-18T11:59:00Z",
      "uid": "ok-om-dx-cw-20291110T1200@contestcal",
      "start_date": "2029-11-10",
      "mode_families": [
        "CW"
      ],
      "band_families": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "12-24"
    },
    {
      "contest_id": "ok-om-dx-cw",
      "name": "OK/OM DX Contest, CW",
      "start": "2030-11-09T12:00:00Z",
      "end": "2030-11-10T11:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 23.98,
      "modes": [
        "CW"
      ],
      "submodes": [],
      "bands": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "1.8 through 28 MHz, WARC bands excluded",
      "sponsor": "CRK / SARA",
      "rules_url": "http://www.okomdx.crk.cz/index.php?page=CW-rules-english",
      "verified": true,
      "note": "The parenthetical deadline (22 November 2026, 2359 UTC) is the right date for the seven-day interval but 23:59 rather than the 11:59 that end-plus-7-days gives; the interval is the stated rule, so the interval is encoded. BLOCKER RECORDED, NOT WORKED AROUND: okomdx.crk.cz serves a TLS certificate issued for default.web4u.cz, so HTTPS fails validation and the rules are reachable only over plain HTTP. rules_url is therefore http:// deliberately; it is not an oversight, and the link checker will keep reporting it as such until the Czech Radio Club fixes the host.",
      "exchange": "Non-Czech and Slovak stations send a signal report + a QSO number starting with 001; Czech and Slovak stations send a signal report + their three-letter county code.",
      "country": "CZ",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-18",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2030-11-17T11:59:00Z",
      "uid": "ok-om-dx-cw-20301109T1200@contestcal",
      "start_date": "2030-11-09",
      "mode_families": [
        "CW"
      ],
      "band_families": [
        "160m",
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "12-24"
    }
  ]
}