In the middle of the 1980s the former telecommunication office of Rottweil installed two directional antennas on the Lemberg Tower for the realization of a passive repeater microwave link between the communications building in Rottweil and the trunk exchange, situated on the Bahnhofstraße in Gosheim. This microwave link, which would not have been possible on a direct path, served to augment the existing terrestrial telephone lines. After these were replaced by fiber optic cables, the microwave link became obsolete and the antennas were dismantled in 2005.
