{
  "contest": {
    "id": "rsgb-iota",
    "name": "RSGB IOTA Contest",
    "sponsor": "RSGB Contest Committee",
    "sponsor_home": "https://www.rsgbcc.org/hf/",
    "country": "GB",
    "summary": "Worldwide contest promoting contacts with stations on IOTA-qualifying islands and encouraging island expeditions. Island stations exchange an IOTA reference; working islands is worth substantially more than working non-island stations.",
    "modes": [
      "CW",
      "SSB"
    ],
    "bands": [
      "80m",
      "40m",
      "20m",
      "15m",
      "10m"
    ],
    "exchange": "RST + serial; island stations add IOTA reference",
    "power_categories": [
      {
        "name": "High Power",
        "max_watts": 1500
      },
      {
        "name": "Low Power",
        "max_watts": 100
      },
      {
        "name": "QRP",
        "max_watts": 5
      }
    ],
    "log_format": "Cabrillo",
    "log_deadline_days": 5,
    "log_submit_url": "https://www.rsgbcc.org/cgi-bin/hfenter.pl?Contest=IOTA%20Contest",
    "timezone": "",
    "local_rolling": false,
    "eligibility": {
      "scope": "worldwide",
      "verified": true,
      "note": "RSGB rules 4(a): 'The contest is open to all stations world-wide.'"
    },
    "active_from": null,
    "active_until": null,
    "note": "",
    "verified": true,
    "rules_url": "https://www.rsgbcc.org/hf/rules/2026/riota.shtml",
    "rules_url_pattern": "https://www.rsgbcc.org/hf/rules/{year}/riota.shtml",
    "rules_url_archived": "",
    "rules_url_checked": "2026-08-11",
    "source_note": "RSGB rules 2026, rule 2: 'the contest always takes place over the last FULL weekend of July'. Verified 2026-08-11."
  },
  "rule": {
    "plain": "Last full weekend of July",
    "raw": {
      "type": "nth_full_weekend",
      "month": 7,
      "n": -1
    },
    "start": {
      "day_offset": 0,
      "time": "1200"
    },
    "end": {
      "day_offset": 1,
      "time": "1200"
    },
    "sessions": null
  },
  "next": [
    {
      "contest_id": "rsgb-iota",
      "name": "RSGB IOTA Contest",
      "start": "2027-07-24T12:00:00Z",
      "end": "2027-07-25T12:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "CW",
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "",
      "sponsor": "RSGB Contest Committee",
      "rules_url": "https://www.rsgbcc.org/hf/rules/2027/riota.shtml",
      "verified": true,
      "note": "",
      "exchange": "RST + serial; island stations add IOTA reference",
      "country": "GB",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-11",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2027-07-30T12:00:00Z",
      "uid": "rsgb-iota-20270724T1200@contestcal",
      "start_date": "2027-07-24",
      "mode_families": [
        "CW",
        "SSB"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "rsgb-iota",
      "name": "RSGB IOTA Contest",
      "start": "2028-07-29T12:00:00Z",
      "end": "2028-07-30T12:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "CW",
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "",
      "sponsor": "RSGB Contest Committee",
      "rules_url": "https://www.rsgbcc.org/hf/rules/2028/riota.shtml",
      "verified": true,
      "note": "",
      "exchange": "RST + serial; island stations add IOTA reference",
      "country": "GB",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-11",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2028-08-04T12:00:00Z",
      "uid": "rsgb-iota-20280729T1200@contestcal",
      "start_date": "2028-07-29",
      "mode_families": [
        "CW",
        "SSB"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "rsgb-iota",
      "name": "RSGB IOTA Contest",
      "start": "2029-07-28T12:00:00Z",
      "end": "2029-07-29T12:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "CW",
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "",
      "sponsor": "RSGB Contest Committee",
      "rules_url": "https://www.rsgbcc.org/hf/rules/2029/riota.shtml",
      "verified": true,
      "note": "",
      "exchange": "RST + serial; island stations add IOTA reference",
      "country": "GB",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-11",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2029-08-03T12:00:00Z",
      "uid": "rsgb-iota-20290728T1200@contestcal",
      "start_date": "2029-07-28",
      "mode_families": [
        "CW",
        "SSB"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "rsgb-iota",
      "name": "RSGB IOTA Contest",
      "start": "2030-07-27T12:00:00Z",
      "end": "2030-07-28T12:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "CW",
        "SSB"
      ],
      "submodes": [],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "",
      "sponsor": "RSGB Contest Committee",
      "rules_url": "https://www.rsgbcc.org/hf/rules/2030/riota.shtml",
      "verified": true,
      "note": "",
      "exchange": "RST + serial; island stations add IOTA reference",
      "country": "GB",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-11",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2030-08-02T12:00:00Z",
      "uid": "rsgb-iota-20300727T1200@contestcal",
      "start_date": "2030-07-27",
      "mode_families": [
        "CW",
        "SSB"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "gte24"
    }
  ]
}