JRC JMA-5104 - Scanner Unit Specification; Scanner Unit (NKE-2042: Redome Type); Scanner Unit (NKE-2062: 6 Kw Rotation Type)

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8.2 Scanner Unit Specification
8.2.1 Scanner unit (NKE-2042 : Redome type)
1) Dimensions Height : 275mm, Diameter of radome : 620mm
2) Mass Approx. 10.5kg
3) Polarization Horizontal
4) Beam width
Horizontal (-3dB) 4˚
Vertical (-3dB) 25˚
Side lobe level Less than -21dB within 10˚ of main beam
5) Rotation speed Approx. 27rpm
6) Frequency 9410 ± 30MHz
7) Peak power 4kW
8) Pulse length/repetition frequency 0.08µs/2250Hz : 0.125nm, 0.25nm, 0.5nm, 0.75nm,
1.5nm(S)
0.25µs/1700Hz : 1.5nm(L), 3nm(S)
0.5µs/1200Hz : 3nm(L), 6nm(S)
1.0µs/650Hz : 6nm(L), 12nm, 24nm, 48nm
(S: Short, L: Long)
9) Modulator Solid-state modulator
10) Duplexer Circulator/diode limiter
11) Front end module Built in
12) IF amplifier Logarithmic amplifier, Noise figure 6dB maximum.
13) Tuning Manual/Auto
8.2.2 Scanner unit (NKE-2062 : 6kW rotation type)
1) Dimensions Height : 432mm, Swing circle : 1220mm
2) Mass Approx. 24kg
3) Polarization Horizontal
4) Beam width
Horizontal (-3dB) 2˚
Vertical (-3dB) 30˚
Side lobe level Less than -23dB within 10˚ of main beam
Other than -26dB within 10˚ of main beam
5) Rotation speed Approx. 27rpm
6) Frequency 9410 ± 30MHz
7) Peak power 6kW
8) Pulse length/repetition frequency 0.08µs/2250Hz : 0.125nm, 0.25nm, 0.5nm, 0.75nm,
1.5nm(S)
0.25µs/1700Hz : 1.5nm(L), 3nm(S)
0.5µs/1200Hz : 3nm(L), 6nm(S)
1.0µs/650Hz : 6nm(L), 12nm, 24nm, 48nm, 72nm
(S: Short, L: Long)
9) Modulator Solid-state modulator
10) Duplexer Circulator/diode limiter