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Radar & sensorsIn service
Russian radar system, consisting of the Kasta 2E1, Kasta 2E2 and their supporting equipment
Kasta 2E is a russian radar system, consisting of the Kasta 2E1, Kasta 2E2 and their supporting equipment originating in Soviet Union. It was built by Almaz-Antey.
Kasta 2E2 (39N6E) — licensed photograph
Vitaly V. Kuzmin · CC BY-SA 4.0 · Resized · CC BY-SA 4.0 · Source ↗ · ModifiedTechnical data
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 28 Sept 2026 | 150 km | Wikipedia contributors | approved |
| 1 Oct 2026 | 150 km | Wikipedia contributors | superseded |
| 1 Oct 2026 | 150 km | Wikipedia contributors | superseded |
Soviet Union
Almaz-Antey
VNIIRT
1989
Target acquisition
830-882 MHz ( UHF )
8° (horizontal)
6-12RPM
150 km (93 mi)
6 km (3.7 mi)
360º
450 m (1,480 ft), 100' (1.7°)
1kW (avg.) 16kW (max)
Flat Face-E , 51U6 ( GRAU index), Kasta 2-1, Casta 2E1, Cyrillic : 51У6
The Kasta 2E radar group ( NATO reporting name "Flat Face-E") is a Russian radar system, consisting of the Kasta 2E1, Kasta 2E2 and their supporting equipment.
The Kasta 2E was developed originally by the Soviet Union . Its primary objective is to overcome deficiencies or to satisfy the demand in low-level surveillance. Both radar types can be triggered with either equal or opposed phases. Both antenna types can optionally be mounted on a standard 50 meter pylon. This arrangement causes a displacement of the radar horizon which in turn increases the detection altitude up to 6 km at a distance of 150 km.
Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
Kasta 2E equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
Algeria
Armenia
GreeceReported count for Kasta 2E1. Service scope: Hellenic Army; does not replace a national total. 1 distinct count cell(s) from the same source list; shared rowspan cells counted once. Retired, wholly reserve and on-order rows are excluded; the reported count retains any explicitly mixed stock scope in the quoted row. Count column(s): quantity: 3. Origin: Russia. The listed variants/roles are the scope, not an immediately deployable count. The components do not establish one inventory census date; the stored date is the retrieved source snapshot.
Vietnam