Swisscom-Sendeturm St. Chrischona

Swisscom-Sendeturm St. Chrischona is a communications tower built in 1980–1984 near Basel, Switzerland, on the territory of the municipality Bettingen, Basel-Stadt.

Apart from television, FM radio and DAB transmitters, and microwave relays, the tower also contains meteorological instruments, two 100 m3 (3,500 cu ft) drinking water tanks, and a meeting/conference room near the top of the concrete structure.

It has an aerodynamic shape; with a round shaft, the wind from both sides splits and causes, at the rear, an effect that keeps the tower from swaying too strongly.

As the location of the tower lies in the seismic zone of Basel – Erdbebengebiet in the Upper Rhine district, this has been built especially securely about the base.

St Chrischona has been in use since 1954, as a broadcasting tower that was 30 m (98 ft) tall at that time which transferred Swiss television programmes.