{
  "contest": {
    "id": "cq-ww-vhf",
    "name": "CQ World Wide VHF Contest",
    "sponsor": "CQ Magazine",
    "sponsor_home": "https://cqww-vhf.com/",
    "country": "US",
    "summary": "Six- and two-metre grid-square contest. One weekend for SSB, CW and FM, a second for digital modes only; multiplier is grids worked per band.",
    "modes": [
      "CW",
      "SSB",
      "FM",
      "Digital"
    ],
    "bands": [
      "6m",
      "2m"
    ],
    "exchange": "Callsign and 4-character Maidenhead grid locator; no signal report",
    "power_categories": [
      {
        "name": "High Power",
        "max_watts": 1500
      },
      {
        "name": "Low Power",
        "max_watts": 100
      },
      {
        "name": "QRP",
        "max_watts": 10
      }
    ],
    "log_format": "Cabrillo",
    "log_deadline_days": 5,
    "log_submit_url": "https://cqww-vhf.com/logcheck/",
    "timezone": "",
    "local_rolling": false,
    "eligibility": {
      "scope": "worldwide",
      "verified": true,
      "note": "cqww-vhf.com rules I: 'for amateurs around the world to contact as many amateurs as possible'."
    },
    "active_from": null,
    "active_until": null,
    "note": "UNVERIFIED RULE: the split-weekend pattern (first full July weekend for SSB/CW/FM, digital two weeks later) rests on two years of sponsor rules (2025, 2026) and the start time changed between them (12:00 UTC in 2025, 14:00 UTC in 2026). Encoded at the 2026 clock time. Re-read the 2027 rules when published.",
    "verified": false,
    "rules_url": "https://cqww-vhf.com/rules/",
    "rules_url_pattern": "",
    "rules_url_archived": "",
    "rules_url_checked": "2026-10-15",
    "source_note": "cqww-vhf.com/rules (2026): 'SSB/CW/FM: July 4-5   Digital: July 18-19. Starts 14:00:00 UTC Saturday Ends 14:00:00 UTC Sunday'; 'Only analog modes (SSB/CW/FM) during the SSB/CW weekend. Only digital modes (FT4, FT8, MSK144, Q65, etc) during the Digital weekend.' The 2025 rules PDF on the same site has July 5-6 and July 19-20 at 12:00 UTC. Both split-weekend years are the first Saturday of July and the Saturday two weeks later; the sponsor states no recurrence rule, and the start time moved from 12:00 to 14:00 UTC between the two. The rules PDFs for 2016-2024 show a single weekend at 18:00-21:00 UTC in mid-July (third Saturday), so the pattern is two years old."
  },
  "rule": {
    "plain": "First full weekend of July",
    "raw": {
      "type": "nth_full_weekend",
      "month": 7,
      "n": 1
    },
    "start": {
      "day_offset": 0,
      "time": "1400"
    },
    "end": {
      "day_offset": 15,
      "time": "1400"
    },
    "sessions": [
      {
        "start": {
          "day_offset": 0,
          "time": "1400"
        },
        "end": {
          "day_offset": 1,
          "time": "1400"
        }
      },
      {
        "start": {
          "day_offset": 14,
          "time": "1400"
        },
        "end": {
          "day_offset": 15,
          "time": "1400"
        }
      }
    ]
  },
  "next": [
    {
      "contest_id": "cq-ww-vhf",
      "name": "CQ World Wide VHF Contest",
      "start": "2027-07-03T14:00:00Z",
      "end": "2027-07-04T14:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "CW",
        "SSB",
        "FM",
        "Digital"
      ],
      "submodes": [
        "FT4",
        "FT8",
        "MSK144",
        "Q65"
      ],
      "bands": [
        "6m",
        "2m"
      ],
      "bands_note": "50 and 144 MHz only. Analog modes (SSB/CW/FM) on the first weekend, digital modes only on the second.",
      "sponsor": "CQ Magazine",
      "rules_url": "https://cqww-vhf.com/rules/",
      "verified": false,
      "note": "UNVERIFIED RULE: the split-weekend pattern (first full July weekend for SSB/CW/FM, digital two weeks later) rests on two years of sponsor rules (2025, 2026) and the start time changed between them (12:00 UTC in 2025, 14:00 UTC in 2026). Encoded at the 2026 clock time. Re-read the 2027 rules when published.",
      "exchange": "Callsign and 4-character Maidenhead grid locator; no signal report",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-10-15",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2027-07-09T14:00:00Z",
      "uid": "cq-ww-vhf-20270703T1400@contestcal",
      "start_date": "2027-07-03",
      "mode_families": [
        "CW",
        "SSB",
        "FM",
        "Digital"
      ],
      "band_families": [
        "6m",
        "2m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "cq-ww-vhf",
      "name": "CQ World Wide VHF Contest",
      "start": "2027-07-17T14:00:00Z",
      "end": "2027-07-18T14:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "CW",
        "SSB",
        "FM",
        "Digital"
      ],
      "submodes": [
        "FT4",
        "FT8",
        "MSK144",
        "Q65"
      ],
      "bands": [
        "6m",
        "2m"
      ],
      "bands_note": "50 and 144 MHz only. Analog modes (SSB/CW/FM) on the first weekend, digital modes only on the second.",
      "sponsor": "CQ Magazine",
      "rules_url": "https://cqww-vhf.com/rules/",
      "verified": false,
      "note": "UNVERIFIED RULE: the split-weekend pattern (first full July weekend for SSB/CW/FM, digital two weeks later) rests on two years of sponsor rules (2025, 2026) and the start time changed between them (12:00 UTC in 2025, 14:00 UTC in 2026). Encoded at the 2026 clock time. Re-read the 2027 rules when published.",
      "exchange": "Callsign and 4-character Maidenhead grid locator; no signal report",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-10-15",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2027-07-23T14:00:00Z",
      "uid": "cq-ww-vhf-20270717T1400@contestcal",
      "start_date": "2027-07-17",
      "mode_families": [
        "CW",
        "SSB",
        "FM",
        "Digital"
      ],
      "band_families": [
        "6m",
        "2m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "cq-ww-vhf",
      "name": "CQ World Wide VHF Contest",
      "start": "2028-07-01T14:00:00Z",
      "end": "2028-07-02T14:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "CW",
        "SSB",
        "FM",
        "Digital"
      ],
      "submodes": [
        "FT4",
        "FT8",
        "MSK144",
        "Q65"
      ],
      "bands": [
        "6m",
        "2m"
      ],
      "bands_note": "50 and 144 MHz only. Analog modes (SSB/CW/FM) on the first weekend, digital modes only on the second.",
      "sponsor": "CQ Magazine",
      "rules_url": "https://cqww-vhf.com/rules/",
      "verified": false,
      "note": "UNVERIFIED RULE: the split-weekend pattern (first full July weekend for SSB/CW/FM, digital two weeks later) rests on two years of sponsor rules (2025, 2026) and the start time changed between them (12:00 UTC in 2025, 14:00 UTC in 2026). Encoded at the 2026 clock time. Re-read the 2027 rules when published.",
      "exchange": "Callsign and 4-character Maidenhead grid locator; no signal report",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-10-15",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2028-07-07T14:00:00Z",
      "uid": "cq-ww-vhf-20280701T1400@contestcal",
      "start_date": "2028-07-01",
      "mode_families": [
        "CW",
        "SSB",
        "FM",
        "Digital"
      ],
      "band_families": [
        "6m",
        "2m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "cq-ww-vhf",
      "name": "CQ World Wide VHF Contest",
      "start": "2028-07-15T14:00:00Z",
      "end": "2028-07-16T14:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "CW",
        "SSB",
        "FM",
        "Digital"
      ],
      "submodes": [
        "FT4",
        "FT8",
        "MSK144",
        "Q65"
      ],
      "bands": [
        "6m",
        "2m"
      ],
      "bands_note": "50 and 144 MHz only. Analog modes (SSB/CW/FM) on the first weekend, digital modes only on the second.",
      "sponsor": "CQ Magazine",
      "rules_url": "https://cqww-vhf.com/rules/",
      "verified": false,
      "note": "UNVERIFIED RULE: the split-weekend pattern (first full July weekend for SSB/CW/FM, digital two weeks later) rests on two years of sponsor rules (2025, 2026) and the start time changed between them (12:00 UTC in 2025, 14:00 UTC in 2026). Encoded at the 2026 clock time. Re-read the 2027 rules when published.",
      "exchange": "Callsign and 4-character Maidenhead grid locator; no signal report",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-10-15",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2028-07-21T14:00:00Z",
      "uid": "cq-ww-vhf-20280715T1400@contestcal",
      "start_date": "2028-07-15",
      "mode_families": [
        "CW",
        "SSB",
        "FM",
        "Digital"
      ],
      "band_families": [
        "6m",
        "2m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "cq-ww-vhf",
      "name": "CQ World Wide VHF Contest",
      "start": "2029-07-07T14:00:00Z",
      "end": "2029-07-08T14:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "CW",
        "SSB",
        "FM",
        "Digital"
      ],
      "submodes": [
        "FT4",
        "FT8",
        "MSK144",
        "Q65"
      ],
      "bands": [
        "6m",
        "2m"
      ],
      "bands_note": "50 and 144 MHz only. Analog modes (SSB/CW/FM) on the first weekend, digital modes only on the second.",
      "sponsor": "CQ Magazine",
      "rules_url": "https://cqww-vhf.com/rules/",
      "verified": false,
      "note": "UNVERIFIED RULE: the split-weekend pattern (first full July weekend for SSB/CW/FM, digital two weeks later) rests on two years of sponsor rules (2025, 2026) and the start time changed between them (12:00 UTC in 2025, 14:00 UTC in 2026). Encoded at the 2026 clock time. Re-read the 2027 rules when published.",
      "exchange": "Callsign and 4-character Maidenhead grid locator; no signal report",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-10-15",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2029-07-13T14:00:00Z",
      "uid": "cq-ww-vhf-20290707T1400@contestcal",
      "start_date": "2029-07-07",
      "mode_families": [
        "CW",
        "SSB",
        "FM",
        "Digital"
      ],
      "band_families": [
        "6m",
        "2m"
      ],
      "duration_bucket": "gte24"
    },
    {
      "contest_id": "cq-ww-vhf",
      "name": "CQ World Wide VHF Contest",
      "start": "2029-07-21T14:00:00Z",
      "end": "2029-07-22T14:00:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 24,
      "modes": [
        "CW",
        "SSB",
        "FM",
        "Digital"
      ],
      "submodes": [
        "FT4",
        "FT8",
        "MSK144",
        "Q65"
      ],
      "bands": [
        "6m",
        "2m"
      ],
      "bands_note": "50 and 144 MHz only. Analog modes (SSB/CW/FM) on the first weekend, digital modes only on the second.",
      "sponsor": "CQ Magazine",
      "rules_url": "https://cqww-vhf.com/rules/",
      "verified": false,
      "note": "UNVERIFIED RULE: the split-weekend pattern (first full July weekend for SSB/CW/FM, digital two weeks later) rests on two years of sponsor rules (2025, 2026) and the start time changed between them (12:00 UTC in 2025, 14:00 UTC in 2026). Encoded at the 2026 clock time. Re-read the 2027 rules when published.",
      "exchange": "Callsign and 4-character Maidenhead grid locator; no signal report",
      "country": "US",
      "rules_url_archived": "",
      "rules_url_checked": "2026-10-15",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2029-07-27T14:00:00Z",
      "uid": "cq-ww-vhf-20290721T1400@contestcal",
      "start_date": "2029-07-21",
      "mode_families": [
        "CW",
        "SSB",
        "FM",
        "Digital"
      ],
      "band_families": [
        "6m",
        "2m"
      ],
      "duration_bucket": "gte24"
    }
  ]
}