Grimeton Radio Station became a UNESCO’s World Heritage site in 2004. It was listed as it the last remaining radio station with wireless technology from the early years of the development of radio. The long wave transmitter SAQ has been used since 1924,
At 10:20UTC on the 17th June 2023, Rudi operating from the amateur radio station SK6SAQ at Grimeton made contact with Diego IU3QJC in Italy on the 20m amateur radio band.