Scanner (Nke-2254-7/9) - JRC JMA-5212-4/6 User Manual

11.4

SCANNER (NKE-2254-7/9)

(1) Dimensions
(2) Mass
(3) Polarization
(4) Directional Characteristics
(5) Revolution
(6) Peak Power
(7) Transmitting Frequency
(8) Transmitting Tube
(9) Pulse Width/Repetition Frequency
(10) Duplexer
(11) Mixer
(12) Intermediate Frequency Amplifier
(13) Overall Noise Figure
25kW-7ft: Height 536mmuSwing Circle 2270mm
25kW-9ft: Height 536mmuSwing Circle 2825mm
25kW-7ft: Approx. 58 kg
25kW-9ft: Approx. 60 kg
Horizontal Polarization
Horizontal Beam Width:
Vertical Beam Width
Sidelobe Level:
24rpm (7/9ft, Normal)
25kW r50%
9410 r30MHz
Magnetron [M1568BS]
Short
0.125nm 0.07PS/2250Hz
0.25nm 0.07PS/2250Hz
0.5nm 0.07PS/2250Hz
0.75nm 0.07PS/2250Hz
1.5nm 0.07PS/2250Hz
3nm 0.2PS/2250Hz
6nm 0.4PS/1400Hz
12nm 0.4PS/1400Hz
24nm
48nm
96nm
Circulator + Diode Limiter
MIC Front End
Intermediate Frequency: 60MHz
Band Width: 25MHz(0.07PS)
Gain: More than 90dB
Amplifying Characteristics: Logarithmic Amplifier
7.5dB (Average)
11 4

11.4 SCANNER (NKE-2254-7/9)

1.0° (7ft, –3dB width)
0.8° (9ft, –3dB width)
20° (7/9ft, –3dB width)
Below –26dB
(7/9ft, within r10°)
Below –30dB
(7/9ft, outside r10°)
Middle
0.2PS/2250Hz
0.2PS/2250Hz
0.4PS/1400Hz
0.8PS/750Hz
0.8PS/750Hz
8MHz(0.2PS, 0.4PS)
3MHz(0.8PS, 1.0PS, 1.2PS)
yyy
yyyy
yyyy
Long
0.4PS/1400Hz
0.8PS/750Hz
1.0PS/650Hz
1.0PS/650Hz
1.0PS/650Hz
1.0PS/650Hz
1.2PS/510Hz
11