Scanner Unit (Nke-249/250) - JRC JMA-2343 Instruction Manual

8.2

Scanner Unit (NKE-249/250)

(1) Dimensions
NKE-249
・ Diameter
・ Height
NKE-250
・ Swing circle
・ Height
(2) Mass
NKE-249
NKE-250
(3) Polarization
(4) Directivity characteristics
NKE-249
・ Horizontal beam width
・ Vertical beam width
・ Side lobe level
NKE-250
・ Horizontal beam width
・ Vertical beam width
・ Side lobe level
(5) Rotation
NKE-249/250
(6) Transmitter frequency
(7) Peak power
NKE-249
NKE-250
(8) Transmitter tube
NKE-249
NKE-250
(9) Pulse length/PRF
NKE-249
620mm
275mm
1220mm
432mm
Approx. 10.5kg
Approx. 24kg
Horizontal
4˚
25˚
－21dB maximum (less than ±10˚ from main lobe)
2˚
30˚
－23dB maximum (less than ±10˚ from main lobe)
－26dB maximum (other than ±10˚ from main lobe)
Approx. 27 rpm
9410±30MHz
4kw
6kw
Magnetron : MSF1421B
Magnetron : MSF1422B
0.08μs /2250Hz (0.125, 0.25, 0.5, 0.75, 1.5NM)
0.25μs/1700Hz (1.5, 3 NM)
0.5μs/1200Hz (3, 6 NM)
1.0μs/650Hz (6, 12, 24, 36, 48 NM)
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