On Wednesday 3rd April 2024 at 11:03 UTC, Zdenko 9A4FM, a radio amateur from Croatia, made contact with Jorn OZ4ABH/P, a radio amateur from Denmark who was operating from Gelsaadal - (Gelsådal) (OZFF-0285), on the 20m amateur radio band. Jorn made a total of 66 contacts while at the reserve.
Gelsaadal - (Gelsådal), is a protected area located in the Gelsåen river valley between Stensbæk Plantage in the south and Gelsåen in the north. The stretch between Gelsbro and Stensbæk Huse, covering approximately 60 hectares, has been protected since 1963, while a further 160 hectares, from Gelsbro to the south edge of Stensbæk Plantage, was added in 1984.