View source for 76N6 Clam Shell Russian Low Altitude Acquisition Radar

{
    "tiers": [
        false,
        false,
        false,
        true
    ],
    "categories": [
        "WEG",
        "Radar Systems",
        "Ground Radars",
        "Air Defense Radars",
        "Tier4",
        "Russia (RUS)",
        "Land",
        "PRO_Russian Federation"
    ],
    "notes": "The 76N6 Clam Shell** is a ground-based three-dimensional radar that uses frequency-modulated continuous-wave transmission for target acquisition in dense electronic countermeasures (ECM) environments. It is designed to detect and track approaching and receding low radar cross-section targets, such as cruise missiles, at very low altitudes.The fully automatic system provides target track data for the fire-control system of static SA-10a or mobile SA-10b air defense systems. Approaching and receding target velocity, range and bearing are provided, with selectable 1- or 6-degree vertical beamwidths and selectable beam polarization.\n\nThe FA-51MU antenna head subsystem combines a transmit and receive antenna, separated by a shielding structure, which prevents spillover from the transmitter into the receiver. The design includes sidelobe suppression features.\n\nThe doubly curved transmit and receive reflectors measure about 9 ft 6 in (2.9 m) in each dimension. The manufacturer claims world-class resolution, high rejection of clutter (100 dB) and very accurate pointing.\n\nThe antenna head is mounted on a hydraulically elevated mast, which is available in two versions: the 40V6M, which is 77 ft 5 in (23.8 m) tall; or the 40V6M2/40V6MD, which is 127 ft 3 in (38.6 m) tall. The mast and antenna head are mated before elevation on a semi-trailer that is towed by a MAZ-537 tractor. A conventional rotational coupler allows the antenna head to rotate through 360 degrees.\n\nThe Clam Shell transmitter, fitted in the FA-52MU transmit/receive module, produces a high-purity continuous wave signal for search operations, with imposed low frequency modulation for ranging to targets. Signal-processing enables the rejection of clutter, terrain, precipitation, high-density chaff and jamming.",
    "dateOfIntroduction": 1976,
    "countryOfOrigin": "Russia (RUS)",
    "proliferation": "Russian Federation",
    "selectedregions": [],
    "checkedregions": [],
    "checkedcountries": [
        "Russian Federation"
    ],
    "dis": {
        "name": "RDR TA SA 10 CLAM SHELL WHL",
        "string": "01.01.222.028.004.004.000"
    },
    "images": [
        "Clam_Shell_(C).jpg",
        "Clam_Shell_(B).jpg",
        "Clam_Shelll_(A).jpg"
    ],
    "sections": [
        {
            "name": "76N6 Clam Shell",
            "sections": [
                {
                    "name": "System",
                    "properties": [
                        {
                            "name": "Alternative Designations",
                            "value": "76N6 Clam Shell"
                        },
                        {
                            "name": "Name",
                            "value": "76N6 Clam Shell"
                        },
                        {
                            "name": "Type",
                            "value": "Acquisition Radar"
                        },
                        {
                            "name": "Band",
                            "value": "I (8-10 GHz)"
                        },
                        {
                            "name": "Power",
                            "value": "1.4 kW continuous wave"
                        },
                        {
                            "name": "Turn-on Time",
                            "value": "3 min"
                        },
                        {
                            "name": "Setup Time (40V6M mast)",
                            "value": "1 hour"
                        },
                        {
                            "name": "Detection Range, Target Flying at 500 meters",
                            "value": "90",
                            "units": "km"
                        },
                        {
                            "name": "Detection Range, Target Flying at 1,000 meters",
                            "value": "120",
                            "units": "km"
                        },
                        {
                            "name": "Target Tracking",
                            "value": "up to 180"
                        },
                        {
                            "name": "Target Resolution Azimuth",
                            "value": "1",
                            "units": "deg"
                        },
                        {
                            "name": "Target Resolution Range",
                            "value": "1.9 km"
                        },
                        {
                            "name": "Target Resolution Velocity",
                            "value": "8.7 kmh"
                        },
                        {
                            "name": "Minimum detectable Radar Cross-Section (RCS)",
                            "value": "0.02 sq m"
                        },
                        {
                            "name": "Maximum Target Speed",
                            "value": "Mach 2.1"
                        },
                        {
                            "name": "Average Power",
                            "value": "1.4 kW"
                        },
                        {
                            "name": "Peak Power",
                            "value": "55.0 kW"
                        },
                        {
                            "name": "Mean Time Between Failures",
                            "value": "100 hours"
                        },
                        {
                            "name": "Mount",
                            "value": "he 76N6 CLAM SHELL (5N66M etc.) is mounted on a large trailer with a mast which is between 24 and 39 m (79 and 128 ft) tall. Usually is used with a mast."
                        }
                    ]
                }
            ]
        },
        {
            "name": "Automotive",
            "properties": [
                {
                    "name": "Mount",
                    "value": "Trailer"
                },
                {
                    "name": "Primary Mover",
                    "value": "MAZ-537 tractor"
                }
            ]
        },
        {
            "name": "Communications",
            "properties": [
                {
                    "name": "VHF Radio",
                    "value": "R-168 Akveduk"
                },
                {
                    "name": "HF Radio",
                    "value": "R-161 Poisk"
                }
            ]
        }
    ],
    "variants": [
        {
            "name": "91N6E",
            "notes": "This is an upgraded derivative of the 64N6 Big Bird radar system developed for the S-400 surface-to-air missile system. It has a fully digital design with a higher peak power rating than its predecessor to accommodate longer-range 48N6E3 and 40N6E missiles.\nThe 91N6E is mounted on the new MZKT-7930 tractor."
        }
    ],
    "type": "WEG",
    "version": 1
}