{
  "contest": {
    "id": "uba-psk63-prefix",
    "name": "UBA PSK63 Prefix Contest",
    "sponsor": "UBA",
    "sponsor_home": "https://www.uba.be/",
    "country": "BE",
    "summary": "UBA's 24-hour BPSK63 contest on the second weekend of January, scored on WPX prefixes and UBA sections, with a 50-watt ceiling for everyone.",
    "modes": [
      "Digital"
    ],
    "bands": [
      "80m",
      "40m",
      "20m",
      "15m",
      "10m"
    ],
    "exchange": "Stations outside Belgium send RSQ + a serial number starting with 001; stations in Belgium send RSQ + the three-letter code of their UBA section (non-members send XXX, the national stations send UBA).",
    "power_categories": [
      {
        "name": "Single/Multi Operator",
        "max_watts": 50
      },
      {
        "name": "QRP",
        "max_watts": 5
      }
    ],
    "log_format": "Cabrillo",
    "log_deadline_days": 7,
    "log_submit_url": "https://contestupload.uba.be/",
    "timezone": "",
    "local_rolling": false,
    "eligibility": {
      "scope": "worldwide",
      "verified": true,
      "note": "'Participation is open to all radio amateurs world wide in possession of a valid licence and to all SWL's.' UBA adds a standing exclusion on this page: 'the UBA Governing Body has decided that the UBA will axe the measures taken by various IARU sister associations and regular sports organisations. This means that, until further notice, radio amateurs from the Russian Federation and Belarus will be excluded from participation.'"
    },
    "active_from": null,
    "active_until": null,
    "note": "The stated deadline instant (17 January 2027 23:59 UTC) is the right date for the seven-day interval UBA states but 23:59 rather than the 11:59 that end-plus-7-days gives. The interval is the rule, so the interval is encoded. Nothing distinguishes 'the 2nd weekend of january' from 'the second full weekend' in either published year, so the full-weekend form is used and no claim is made that UBA meant one rather than the other.",
    "verified": true,
    "rules_url": "https://www.uba.be/en/hf/contest-rules/uba-psk63-prefix-contest",
    "rules_url_pattern": "",
    "rules_url_archived": "",
    "rules_url_checked": "2026-08-18",
    "source_note": "uba.be/en/hf/contest-rules/uba-psk63-prefix-contest, 'UBA PSK63 Prefix Contest 2027', 1. Date: '9 january 2027, 12:00 UTC until 10 january 2027, 11:59 UTC. (every year the 2nd weekend of january)'. 2. Participants: 'Participation is open to all radio amateurs world wide in possession of a valid licence and to all SWL's.' 3. Mode and bands: 'BPSK63 only / 10, 15, 20, 40 and 80 meter, in the segments recommended by the IARU for this mode.' 4. Power: 'Maximum power output 50 W (5 W for QRP), in order not to cause interference or splatter to other participants.' 14. Logs: 'The logs must be sent no later than one week after the contest. The final submission deadline is January 17, 2027, 23:59 UTC.' UBA's own contest calendar independently gives the 2026 edition as 10/01/2026 12:00 to 11/01/2026 12:00; the second-weekend rule reproduces both years."
  },
  "rule": {
    "plain": "Second full weekend of January",
    "raw": {
      "type": "nth_full_weekend",
      "month": 1,
      "n": 2
    },
    "start": {
      "day_offset": 0,
      "time": "1200"
    },
    "end": {
      "day_offset": 1,
      "time": "1159"
    },
    "sessions": null
  },
  "next": [
    {
      "contest_id": "uba-psk63-prefix",
      "name": "UBA PSK63 Prefix Contest",
      "start": "2027-01-09T12:00:00Z",
      "end": "2027-01-10T11:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 23.98,
      "modes": [
        "Digital"
      ],
      "submodes": [
        "BPSK63"
      ],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "",
      "sponsor": "UBA",
      "rules_url": "https://www.uba.be/en/hf/contest-rules/uba-psk63-prefix-contest",
      "verified": true,
      "note": "The stated deadline instant (17 January 2027 23:59 UTC) is the right date for the seven-day interval UBA states but 23:59 rather than the 11:59 that end-plus-7-days gives. The interval is the rule, so the interval is encoded. Nothing distinguishes 'the 2nd weekend of january' from 'the second full weekend' in either published year, so the full-weekend form is used and no claim is made that UBA meant one rather than the other.",
      "exchange": "Stations outside Belgium send RSQ + a serial number starting with 001; stations in Belgium send RSQ + the three-letter code of their UBA section (non-members send XXX, the national stations send UBA).",
      "country": "BE",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-18",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2027-01-17T11:59:00Z",
      "uid": "uba-psk63-prefix-20270109T1200@contestcal",
      "start_date": "2027-01-09",
      "mode_families": [
        "Digital"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "12-24"
    },
    {
      "contest_id": "uba-psk63-prefix",
      "name": "UBA PSK63 Prefix Contest",
      "start": "2028-01-08T12:00:00Z",
      "end": "2028-01-09T11:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 23.98,
      "modes": [
        "Digital"
      ],
      "submodes": [
        "BPSK63"
      ],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "",
      "sponsor": "UBA",
      "rules_url": "https://www.uba.be/en/hf/contest-rules/uba-psk63-prefix-contest",
      "verified": true,
      "note": "The stated deadline instant (17 January 2027 23:59 UTC) is the right date for the seven-day interval UBA states but 23:59 rather than the 11:59 that end-plus-7-days gives. The interval is the rule, so the interval is encoded. Nothing distinguishes 'the 2nd weekend of january' from 'the second full weekend' in either published year, so the full-weekend form is used and no claim is made that UBA meant one rather than the other.",
      "exchange": "Stations outside Belgium send RSQ + a serial number starting with 001; stations in Belgium send RSQ + the three-letter code of their UBA section (non-members send XXX, the national stations send UBA).",
      "country": "BE",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-18",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2028-01-16T11:59:00Z",
      "uid": "uba-psk63-prefix-20280108T1200@contestcal",
      "start_date": "2028-01-08",
      "mode_families": [
        "Digital"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "12-24"
    },
    {
      "contest_id": "uba-psk63-prefix",
      "name": "UBA PSK63 Prefix Contest",
      "start": "2029-01-13T12:00:00Z",
      "end": "2029-01-14T11:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 23.98,
      "modes": [
        "Digital"
      ],
      "submodes": [
        "BPSK63"
      ],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "",
      "sponsor": "UBA",
      "rules_url": "https://www.uba.be/en/hf/contest-rules/uba-psk63-prefix-contest",
      "verified": true,
      "note": "The stated deadline instant (17 January 2027 23:59 UTC) is the right date for the seven-day interval UBA states but 23:59 rather than the 11:59 that end-plus-7-days gives. The interval is the rule, so the interval is encoded. Nothing distinguishes 'the 2nd weekend of january' from 'the second full weekend' in either published year, so the full-weekend form is used and no claim is made that UBA meant one rather than the other.",
      "exchange": "Stations outside Belgium send RSQ + a serial number starting with 001; stations in Belgium send RSQ + the three-letter code of their UBA section (non-members send XXX, the national stations send UBA).",
      "country": "BE",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-18",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2029-01-21T11:59:00Z",
      "uid": "uba-psk63-prefix-20290113T1200@contestcal",
      "start_date": "2029-01-13",
      "mode_families": [
        "Digital"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "12-24"
    },
    {
      "contest_id": "uba-psk63-prefix",
      "name": "UBA PSK63 Prefix Contest",
      "start": "2030-01-12T12:00:00Z",
      "end": "2030-01-13T11:59:00Z",
      "start_wall": null,
      "end_wall": null,
      "local_rolling": false,
      "timezone": "",
      "duration_hours": 23.98,
      "modes": [
        "Digital"
      ],
      "submodes": [
        "BPSK63"
      ],
      "bands": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "bands_note": "",
      "sponsor": "UBA",
      "rules_url": "https://www.uba.be/en/hf/contest-rules/uba-psk63-prefix-contest",
      "verified": true,
      "note": "The stated deadline instant (17 January 2027 23:59 UTC) is the right date for the seven-day interval UBA states but 23:59 rather than the 11:59 that end-plus-7-days gives. The interval is the rule, so the interval is encoded. Nothing distinguishes 'the 2nd weekend of january' from 'the second full weekend' in either published year, so the full-weekend form is used and no claim is made that UBA meant one rather than the other.",
      "exchange": "Stations outside Belgium send RSQ + a serial number starting with 001; stations in Belgium send RSQ + the three-letter code of their UBA section (non-members send XXX, the national stations send UBA).",
      "country": "BE",
      "rules_url_archived": "",
      "rules_url_checked": "2026-08-18",
      "can_enter": true,
      "eligibility_scope": "worldwide",
      "eligibility_reason": "",
      "works": "everyone",
      "practical": "",
      "log_due": "2030-01-20T11:59:00Z",
      "uid": "uba-psk63-prefix-20300112T1200@contestcal",
      "start_date": "2030-01-12",
      "mode_families": [
        "Digital"
      ],
      "band_families": [
        "80m",
        "40m",
        "20m",
        "15m",
        "10m"
      ],
      "duration_bucket": "12-24"
    }
  ]
}