Sender Jena, Radio transmission tower in Hummelsberg, Germany.

Sender Jena is a steel lattice transmission tower situated on the northern slope of Hummelsberg, roughly 2 kilometers southeast of Jena city center. The facility broadcasts television, radio, and data signals across the region, serving households and businesses with multiple transmission standards.

The original broadcasting facility featured a 37-meter lattice mast that served the region for decades. A complete reconstruction in 2008 modernized the installation to meet current transmission standards and significantly improved its technical capabilities.

Since 29 March 2017 the site has carried DVB-T2 HD, with ARD's MDR multiplex, ZDF and freenet TV's encrypted commercial package in HEVC at Full HD. The Jena signals run in a single-frequency network with other transmitter sites, so neighbouring locations share the same frequencies. ARD-alpha HD and SWR BW HD need an hbb-TV capable receiver.

The tower stands on the northern slope of the Hummelsberg, part of the Kernberge ridge southeast of Jena's centre. The sources describe no public viewing area or visitor access; the site is an operating transmission facility of Deutsche Funkturm, so the tower is seen from the surrounding slopes and paths rather than entered.

The 60-metre steel lattice tower that entered service in 2008 replaced a 37-metre mast dismantled during the switch to DVB-T. Since 29 March 2017 it has carried DVB-T2 HD, with ARD, ZDF and freenet TV programmes in HEVC at Full HD, and its transmissions run in a single-frequency network with other sites.