Ramona passive sensor

The serial number was derived from the Czech phrase "Komplet radiotechnického průzkumu" meaning "Radiotechnical Reconnaissance Set".

Each receiver comprised a large spherical radome mounted on the top of a 25 m fixed mast.

This radome, made of identical segments of polyurethane foam, contained the radio antennas and the microwave components, intermediate frequency preamplifiers and the two-way communications equipment for communicating between central and side sites.

At first glance the system bore a striking resemblance to typical Eastern European water towers.

Ramona operated over the frequency range of 0.8-18 GHz and provided surveillance over a sector of approximately 100 degrees.