A QSL from SAQ Grimeton for my reception of their special 100th anniversary transmission on 17.2 kHz, July 2nd, 2025.

QSL to celebrate the 100 Year Anniversary Transmission of SAQ Grimeton

Reception quality was pretty good with an easy to decode CW signal: VVV VVV VVV DE SAQ SAQ SAQ:

SAQ Grimeton Radio Station is a historic longwave transatlantic wireless telegraphy station located near Varberg in southern Sweden. Built between 1922 and 1924, it is the only remaining station of its kind from the early 20th century and is renowned for its use of a unique Alexanderson alternator, a pre-electronic transmitter technology developed by Swedish-American engineer Ernst Alexanderson. The station, with the callsign SAQ, operates on a very low frequency (VLF) of 17.2 kHz and was primarily used to transmit Morse code telegrams to North America, particularly to Radio Central on Long Island, New York, from the 1920s through the 1940s. During World War II, it served as Sweden’s sole telecommunication link with the world and was later used for submarine communications until 1996.