Fernmeldeturm Waldenbuch, Telecommunication tower in Waldenbuch, Germany

The Fernmeldeturm Waldenbuch is a concrete telecommunications tower that rises from Betzenberg hill with multiple platforms and antennas at various levels. The structure carries mobile and radio broadcasting signals across the surrounding regions.

Built in reinforced concrete and completed in 1976, the tower is a type FMT 2/73 design drawn up in 1969 by the architects Heinle, Hoyer and Teutschbein. Its revised FMT 2 design, reworked between November 1972 and June 1973, used radially arranged steel truss structures first tried on the Mannheim and Koblenz towers, cutting costs by around 20 percent. From 1998 to 2006 the Eurosignal transmitter, major radio relay links, cable head-end and TV transposers were shut down.

The tower is a familiar landmark in the local landscape that supports daily communication for people throughout the region. It connects residents and users through mobile networks and broadcasting services.

The tower stands on the Betzenberg at 499.5 m, about 170 m northeast of the hill's highest point, reached via the Dettenhäuser Sträßle forest path; the district boundary to Böblingen runs directly past it. A survey point at 497 m lies about 60 m north of the tower on the same path. The tower itself is not open to visitors.

The tower is a mandatory reporting point for visual flight rules traffic at Stuttgart Airport, so pilots use it for navigation. Since 1998–2006 the Eurosignal transmitter, major radio relay links, the cable head-end and TV transposers were shut down; today it serves only mobile and BOS radio.