TPS-10 Medium Range Height Finder Radar Set - A Medium Range Height Finder Radar set built by Zenith/RCA. The original TPS-10 was developed by the MIT Radiation Laboratory during WWII. The postwar A model was produced by Zenith Corporation and following models, including the D model, produced by the Radio Corporation of America (RCA). Modified versions were produced as FPS-4 (fixed) and MPS-8 (mobile), some 450 copies of these versions were produced between 1948 and 1954.
Winkler, David F., Searching the Skies: the Legacy of the United States Cold War Defense Radar Program, USAF Hq Air Combat Command, 1997, 192 pages, Pdf, page 76.