IARU Region 1 UHF/Microwaves Contest

Region 1's UHF and microwave weekend: 24 hours on the first weekend of October, 435 MHz up to the millimetre bands.

Rules at iaru-r1.orgThe rules are the sponsor's. This page holds the dates and the facts.

When it runs

First Saturday of October

1400Z Saturday → 1400Z Sunday

Times are UTC, as the sponsor states them.

Next runnings

1400Z Sat 2 Oct → 1400Z Sun 3 Oct · 24h2027
in 350 days
1400Z Sat 7 Oct → 1400Z Sun 8 Oct · 24h2028
in 721 days
1400Z Sat 6 Oct → 1400Z Sun 7 Oct · 24h2029
in 1085 days
1400Z Sat 5 Oct → 1400Z Sun 6 Oct · 24h2030
in 1449 days

Operating

Modes: CWSSBFM
Bands: 70cm23cm13cm3cm
Sponsor names 435 MHz, 1.3, 2.4, 3.4, 5.7, 10 GHz and a millimetre group (24, 47, 76, 122, 134, 245 GHz). Only 70cm, 23cm, 13cm and 3cm are recorded as tokens; 3.4 GHz, 5.7 GHz and the millimetre bands have no token here.
Exchange: RS(T) + serial number from 001 per band + 6-character locator (e.g. 59003 JO20DB)
Logs: EDI
Who can enter: Anyone, anywhere.
Not encoded as an entity list: the sponsor limits entry to Region 1 ('All licensed radio amateurs in Region 1 may participate in the contest'; special high-power licences enter as check logs only), and enumerating every Region 1 entity is not done here. Stations elsewhere cannot enter but may be worked.

Where this comes from

Checked against the sponsor: Yes. The rule on this page was read off IARU Region 1 VHF+ Committee's own published rules. Link last confirmed 2026-10-15.
What the source says: VHF Handbook 10.03 (https://www.iaru-r1.org/wp-content/uploads/2026/02/VHF_Handbook_V10_03_final.pdf), section 'RULES IARU R1 50/70 MHZ, 145 MHZ AND UHF/uW CONTESTS': 'IARU Region 1 UHF/Microwaves contest will begin on the first Saturday of October'; 'Each contest will commence at 14:00 UTC on the Saturday and end at 14:00 UTC on the Sunday.' Sponsor's hub calendar: 2026 Oct 3-4. Categories: SO, MO (SO-LP, MO-LP and 6H on 435 MHz). Read 2026-10-15.
Recorded caveats: Log deadline is not a fixed offset (EDI 'no later than the first Wednesday following the contest weekend at 23:59:59 UTC'), so log_deadline_days is not encoded.

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

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