Being an island in the heart of the GDR West Berlin was the ideal location for evesdropping further into the east. The number and size of signal intelligence installations inside West Berlin grew with the development of new technology.
- Site I - Rudow Radar
- Site II - Tempelhof
- Site III - Teufelsberg (Field Station Berlin)
- Site IV - Jagen 87 Grunewald
- USAFSS/ESC Station - Marienfelde
- Cité Foch