On Friday 29th March 2024 at 14:21 UTC, Zdenko 9A4FM, a radio amateur from Croatia, made contact with Jaromir OK1XZ/P, a radio amateur from the Czech Republic, who was operating from EVL Cervená Tremesná - rybník (OKFF-3012), on the 20m amateur radio band.
EVL Cervená Tremesná - rybník (OKFF-3012)[Červená Třemešná - pond], is a protected area of 9.4239 hectares lying to the north-east of Prague in the north of the Czech Republic. It was designated in 2011 as a Nature Monument and is an IUCN Management Category III area.
An IUCN Management Category III area is set aside to protect a specific natural monument. Examples of natural monuments include a landform, sea mount, submarine cavern, geological feature e.g. a cave or a living feature e.g. an ancient grove. These areas are often quite small but have a high visitor value.