UBA PSK63 Prefix Contest

When it runs

Second full weekend of January

• 1200Z Saturday → 1159Z Sunday

Times are UTC, as the sponsor states them.

Next runnings

1. 1200Z Sat 9 Jan → 1159Z Sun 10 Jan · 23h 59m2027

   in 100 days

   Logs due 1159Z Sun 17 Jan

2. 1200Z Sat 8 Jan → 1159Z Sun 9 Jan · 23h 59m2028

   in 464 days

   Logs due 1159Z Sun 16 Jan

3. 1200Z Sat 13 Jan → 1159Z Sun 14 Jan · 23h 59m2029

   in 835 days

   Logs due 1159Z Sun 21 Jan

4. 1200Z Sat 12 Jan → 1159Z Sun 13 Jan · 23h 59m2030

   in 1199 days

   Logs due 1159Z Sun 20 Jan

Operating

Modes

Digital BPSK63

Bands

80m40m20m15m10m

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

Single/Multi Operator 50 WQRP 5 W

Logs

Cabrillo · due 7 days after the end · contestupload.uba.be↗

Who can enter

Anyone, anywhere.

'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.'

Where this comes from

Checked against the sponsor

Yes. The rule on this page was read off UBA's own published rules. Link last confirmed 2026-08-18.

What the source says

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.

Recorded caveats

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.

Something wrong? How to report it — a link to the sponsor's own page is all it takes.

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