On Tuesday 2nd April 2024 at 09:34 UTC, Zdenko 9A4FM, a radio amateur from Croatia, made contact with Saku OH2NOS/P, a radio amateur from Finland, who was operating from Rauno ja Liisa Ruuhijärven metsä (OHFF-1789), on the 20m amateur radio band. Saku made a total of 192 contacts while at the reserve.
Rauno ja Liisa Ruuhijärven metsä (OHFF-1789), is a protected area of 54 hectares located to the north of Vantaa in the south of Finland. It was designated in 2020 as a Private Nature Reserve.