Sender Freiburg-Lehen, Radio transmitter in Lehen district, Freiburg, Germany

The Sender Freiburg-Lehen is a broadcasting facility in the Lehen district of Freiburg. Its 92-meter steel lattice mast, a three-sided guyed structure with a square cross-section 1.2 meters on each side, carries UKW antennas in its upper quarter. The mast itself served as a medium-wave antenna, fed at its insulated base through a tunable matching circuit.

Radio broadcasting in Freiburg began in 1926 from the attic of the municipal trade school on Kirchstraße. On 20 December 1933 a new site west of Lehen took over, using a 107-metre wooden tower. Wehrmacht troops blew up that tower on 21 April 1945; in October 1945 the present 92-metre steel lattice mast began transmitting from the same spot. The post handed the facility to the Südwestfunk in 1948, and new operating buildings were inaugurated on 23 May 1989.

The site's history is tied to the name Freiburg: broadcasting began in 1926 from the attic of the municipal trade school on Kirchstraße, before the move to Lehen in 1933. The mast itself served as the medium-wave antenna, fed at its insulated base through a tunable matching circuit. The medium-wave transmitter went off the air on 8 January 2012 at 23:00 after the regular sign-off, as SWR dropped its costly medium-wave broadcasts and shifted to DAB+.

The mast stands west of Lehen, on the site used since 1933; the old guy-wire anchor masts of the former cage feed line are still visible nearby. The medium-wave transmitter was switched off on 8 January 2012 at 23:00, so only VHF (UKW) broadcasts continue from here. The grounds are not open to visitors; the mast can be seen from public paths around the village.

The mast is a three-sided guyed steel lattice with a square cross-section of 1.2 m edge length and a total weight of 20 t. Some masts that once carried the cage line feeding the transmitter are still standing and can be seen near the site.