Update September 19, 2025: The OJ0 Märket Reef DXpedition is now in motion, signing as OJ0YL and OJ0W. This afternoon, the connection boat carrying the crew — Anne OH2YL, Panu OH7CW, Jari OH6QU, and Juha OH6XX departed Åland (OH0) in perfect weather for the 25 km (15.5 mi) trip to Märket (OJ0).

Upon arrival, they will first erect the EFHW antenna and bring one station on air, with more antennas to follow. By tomorrow, all stations are expected to be fully operational

Between Finland and Sweden lies Märket Reef, a rocky outpost that has captured the imagination of DXers for decades. With no trees, only a lighthouse and seabirds standing guard, this tiny Baltic island is split by a uniquely zigzagging international border re-drawn in 1985—a result of a century-old lighthouse placement mistake in 1885.

From September 20–26th, 2025, the island will come to life on the airwaves. OJ0W and OJ0YL will be activated by the Finnish-based team of: Anne/OH2YL, Jari/OH6QU, Juha/OH6XX and Panu/OH7CW.

Landing is weather-dependent, with access planned via Finland.

On the air:
•    Bands: 160 to 6 meters, emphasis on low bands
•    Modes: CW, FT8, and SSB
•    Equipment includes multiband wire antennas, verticals, VDAs (10–20m), and a 6-element beam for 6m
•    At least two stations active around the clock, using amplifiers for strong, reliable signals

A full VOACAP propagation forecast will be released prior to the expedition, featuring band-by-band predictions and sunrise/sunset data for Märket and wherever your QTH is—great for planning those low-band QSOs.  https://www.voacap.com/dx/oj0yl/

If landing occurs early, the team plans to participate in the Scandinavian Activity Contest (CW).

ClubLog uploads will be live-streamed if connectivity allows; otherwise, logs will be updated several times daily. OQRS will open once the DXpedition concludes.

This activation offers DXers a rare opportunity to log OJ0 from one of Europe’s smallest and most weather-beaten entities. With skilled operators and powerful gear, Märket Reef will definitely be heard—far and wide.

QSL: OJ0YL via OH2YL and OJ0W via OH7CW