{
  "contest": {
    "id": "rsgb-ft4-series",
    "name": "RSGB FT4 Contest Series",
    "sponsor": "RSGB Contest Committee",
    "sponsor_home": "https://www.rsgbcc.org/hf/",
    "country": "GB",
    "summary": "Two hours of FT4 on a Monday evening, twelve times a year, across five HF bands.",
    "modes": [
      "FT8/FT4"
    ],
    "bands": [
      "80m",
      "40m",
      "20m",
      "15m",
      "10m"
    ],
    "exchange": "A signal report. A serial number is not required.",
    "power_categories": [],
    "log_format": "",
    "log_deadline_days": 1,
    "log_submit_url": "",
    "timezone": "",
    "local_rolling": false,
    "eligibility": {
      "scope": "worldwide",
      "verified": true,
      "note": "Six sections split UK and Non-UK at 100 W and 10 W, so stations outside the UK&CD have categories of their own. RSGB adds that 'UK&CD entrants must be RSGB members', which is a condition on the home entrants rather than on everyone."
    },
    "active_from": null,
    "active_until": null,
    "note": "TWELVE MONDAY EVENINGS AND THE CLOCK SHIFTS FOR THE SUMMER: January to March and October to December run 2000-2200 UTC, April to September run 1900-2100. Six legs each way, so the record's default is the winter clock and the summer legs carry their own -- the third contest to need per-date times, after the Autumn Series and the 80m Club Championship.\n\nMANUAL BECAUSE THE DATES ARE NOT ON THE RULES PAGE and follow no ordinal: they are Mondays, but the third Monday in January, the fourth in February, the third in March. RSGB publishes them on its CGI calendar and this record holds what that prints.\n\nNot the same contest as the FT4 International Activity Day in April, which is 24 hours and has its own rules page.",
    "verified": true,
    "rules_url": "https://www.rsgbcc.org/hf/rules/2026/r80m_ft4.shtml",
    "rules_url_pattern": "https://www.rsgbcc.org/hf/rules/{year}/r80m_ft4.shtml",
    "rules_url_archived": "",
    "rules_url_checked": "2026-08-23",
    "source_note": "rsgbcc.org/hf/rules/2026/r80m_ft4.shtml for the rules and rsgbcc.org/cgi-bin/hfreadcal.pl?year=2026 for the dates, both RSGB's own. 'On Mondays only', twelve legs across the year. Mode: 'Standard FT4 format will be used as implemented in WSJT-X V2.6.1 or later or the equivalent in JTDX, MSHV, WSJT-Z etc.', and entrants 'must not use dedicated Contest formats'. Bands: 80, 40, 20, 15 and 10 m. Exchange: 'Signal report is required' and 'Serial number is NOT required'. Six sections covering UK and Non-UK entrants at 100 W and 10 W, open and restricted; 'UK&CD entrants must be RSGB members'. Logs within 24 hours. Checked 2026-08-23."
  },
  "rule": {
    "plain": "Dates set by the sponsor each year (no derivable rule)",
    "raw": {
      "type": "manual",
      "dates": {
        "2026": [
          "2026-01-19",
          "2026-02-23",
          "2026-03-16",
          {
            "date": "2026-04-27",
            "start": "1900",
            "end": "2100"
          },
          {
            "date": "2026-05-18",
            "start": "1900",
            "end": "2100"
          },
          {
            "date": "2026-06-15",
            "start": "1900",
            "end": "2100"
          },
          {
            "date": "2026-07-27",
            "start": "1900",
            "end": "2100"
          },
          {
            "date": "2026-08-17",
            "start": "1900",
            "end": "2100"
          },
          {
            "date": "2026-09-28",
            "start": "1900",
            "end": "2100"
          },
          "2026-10-26",
          "2026-11-16",
          "2026-12-14"
        ]
      }
    },
    "start": {
      "day_offset": 0,
      "time": "2000"
    },
    "end": {
      "day_offset": 0,
      "time": "2200"
    },
    "sessions": null
  },
  "next": [
    {
      "contest_id": "rsgb-ft4-series",
      "name": "RSGB FT4 Contest Series",
      "start": "2026-10-26T20:00:00Z",
      "end": "2026-10-26T22:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 2,
      "modes": [
        "FT8/FT4"
      ],
      "submodes": [
        "FT4"
      ],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "80, 40, 20, 15 and 10 m.",
      "sponsor": "RSGB Contest Committee",
      "rules_url": "https://www.rsgbcc.org/hf/rules/2026/r80m_ft4.shtml",
      "verified": true,
      "note": "TWELVE MONDAY EVENINGS AND THE CLOCK SHIFTS FOR THE SUMMER: January to March and October to December run 2000-2200 UTC, April to September run 1900-2100. Six legs each way, so the record's default is the winter clock and the summer legs carry their own -- the third contest to need per-date times, after the Autumn Series and the 80m Club Championship.\n\nMANUAL BECAUSE THE DATES ARE NOT ON THE RULES PAGE and follow no ordinal: they are Mondays, but the third Monday in January, the fourth in February, the third in March. RSGB publishes them on its CGI calendar and this record holds what that prints.\n\nNot the same contest as the FT4 International Activity Day in April, which is 24 hours and has its own rules page.",
      "exchange": "A signal report. A serial number is not required.",
      "country": "GB",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-23",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2026-10-27T22:00:00Z",
      "uid": "rsgb-ft4-series-20261026T2000@contestcal",
      "start_date": "2026-10-26",
      "mode_families": [
        "Digital",
        "FT8/FT4"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "2-12"
    },
    {
      "contest_id": "rsgb-ft4-series",
      "name": "RSGB FT4 Contest Series",
      "start": "2026-11-16T20:00:00Z",
      "end": "2026-11-16T22:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 2,
      "modes": [
        "FT8/FT4"
      ],
      "submodes": [
        "FT4"
      ],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "80, 40, 20, 15 and 10 m.",
      "sponsor": "RSGB Contest Committee",
      "rules_url": "https://www.rsgbcc.org/hf/rules/2026/r80m_ft4.shtml",
      "verified": true,
      "note": "TWELVE MONDAY EVENINGS AND THE CLOCK SHIFTS FOR THE SUMMER: January to March and October to December run 2000-2200 UTC, April to September run 1900-2100. Six legs each way, so the record's default is the winter clock and the summer legs carry their own -- the third contest to need per-date times, after the Autumn Series and the 80m Club Championship.\n\nMANUAL BECAUSE THE DATES ARE NOT ON THE RULES PAGE and follow no ordinal: they are Mondays, but the third Monday in January, the fourth in February, the third in March. RSGB publishes them on its CGI calendar and this record holds what that prints.\n\nNot the same contest as the FT4 International Activity Day in April, which is 24 hours and has its own rules page.",
      "exchange": "A signal report. A serial number is not required.",
      "country": "GB",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-23",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2026-11-17T22:00:00Z",
      "uid": "rsgb-ft4-series-20261116T2000@contestcal",
      "start_date": "2026-11-16",
      "mode_families": [
        "Digital",
        "FT8/FT4"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "2-12"
    },
    {
      "contest_id": "rsgb-ft4-series",
      "name": "RSGB FT4 Contest Series",
      "start": "2026-12-14T20:00:00Z",
      "end": "2026-12-14T22:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 2,
      "modes": [
        "FT8/FT4"
      ],
      "submodes": [
        "FT4"
      ],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "80, 40, 20, 15 and 10 m.",
      "sponsor": "RSGB Contest Committee",
      "rules_url": "https://www.rsgbcc.org/hf/rules/2026/r80m_ft4.shtml",
      "verified": true,
      "note": "TWELVE MONDAY EVENINGS AND THE CLOCK SHIFTS FOR THE SUMMER: January to March and October to December run 2000-2200 UTC, April to September run 1900-2100. Six legs each way, so the record's default is the winter clock and the summer legs carry their own -- the third contest to need per-date times, after the Autumn Series and the 80m Club Championship.\n\nMANUAL BECAUSE THE DATES ARE NOT ON THE RULES PAGE and follow no ordinal: they are Mondays, but the third Monday in January, the fourth in February, the third in March. RSGB publishes them on its CGI calendar and this record holds what that prints.\n\nNot the same contest as the FT4 International Activity Day in April, which is 24 hours and has its own rules page.",
      "exchange": "A signal report. A serial number is not required.",
      "country": "GB",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-23",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2026-12-15T22:00:00Z",
      "uid": "rsgb-ft4-series-20261214T2000@contestcal",
      "start_date": "2026-12-14",
      "mode_families": [
        "Digital",
        "FT8/FT4"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "2-12"
    }
  ]
}