The Tesat-Spacecom GmbH & Co. KG (TESAT) from Backnang, Germany is an independently operating subsidiary of Airbus Defence and Space which develops, produces and tests communication payloads for international satellite manufacturers.

In 1949, the AEG (Allgemeine Elektricitäts Gesellschaft AG) business area telecommunications technology was relocated from Berlin to Backnang.

On March 1, 1967, the AEG Telefunken AG was founded with the aerospace specialty and the focus on development, sales, assembly and testing.

In 1983, as part of the AEG-Telefunken settlement application, the group's share was withdrawn by the three co-shareholders and divided in the same proportion as the previous shareholder base.

TESAT's other product segments include channel amplifiers, filters, multiplexers, modulators, transmitters and TTC transponders.