Huge Antenna System is Being Built in Kaliningrad to Monitor NATO

In Kaliningrad, near the eastern border of Poland, Russia is building a large-scale antenna complex that can track NATO communications.

The construction of the facility was discovered by researchers from the Tochnyi.info project.

It first appeared in OSINT materials back in 2023. Satellite images clearly show a pattern of concentric circles, radially arranged channels, and a system of access roads to the central area.

Today, the territory is surrounded by a continuous perimeter fence and a checkpoint.

Although the facility is still under construction, it differs from typical infrastructure or conventional radar installations. Inside the perimeter, there are no foundations for large antenna dishes or protective structures, with the exception of a leveled central area.

Instead, at least six concentric rings can be seen. On the outer ring and along the entire perimeter, there are uniform excavations in the ground that resemble sites for the installation of antenna masts.

The perfect circular symmetry, repeated intervals for possible antennas, few radial roads, and a single potential building area in the center suggest that this is a Circularly Disposed Antenna Array (CDAA).

A CDAA is a large field of vertical monopole antennas arranged in several concentric rows. Such systems are designed to detect and determine the direction of incoming radio frequency signals.

They were widely used during the Cold War for direction finding, electronic reconnaissance, and underwater communications.

The diameter of the circle directly determines the operating frequencies of the system and, therefore, the wavelengths it can receive. Typically, a CDAA consists of several concentric rings, each tuned to a specific section of the radio frequency spectrum, ranging from a few megahertz to approximately 28 MHz.

Thanks to this architecture, the system provides ultra-long-range radio direction finding: its detection range can reach up to 7,400 km, allowing radio signals to be monitored over intercontinental distances.

Such a system will allow Russia to effectively control NATO’s electronic communications in Eastern Europe and the Baltic region. The use of very low (VLF) and low (LF) frequency bands could provide reliable communication with submerged submarines operating in the Baltic Sea and the North Atlantic.

Earlier, it was reported that the NATO Strategy for Eastern Europe provides for the rapid destruction of Kaliningrad in the event of war.