JRC JMA-3910-4 User Manual

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10.2 Scanner Unit NKE-1055-4 ／ 6
1) Outside dimensions: Approx. height 440 × approx. swing circle 1340 (mm) (4ft)
Approx. height 440 × approx. swing circle 1910 (mm) (6ft)
2) Mass: Approx. 29kg (4ft)
Approx. 33kg (6ft)
3) Plane of polarization: Horizontal polarization
4) Beam width: Horizontal beam width = 1.9 degrees (4ft)
Horizontal beam width = 1.2 degrees (6ft)
Vertical beam width = 25 degrees (4ft)
Vertical beam width = 25 degrees (6ft)
Side lobe level
Within ±10 degrees = –23dB max. (4ft)
–26dB max. (6ft)
Outside ±10 degrees = –26dB max. (4ft)
–30dB max. (6ft)
5) Antenna rotation: Approx. 24rpm
6) Transmission output: 10kW
7) Transmission frequency: 9410±30MHz
8) Transmission tube: Magnetron MSF1425B
9) Transmission pulse width/repetition frequency:
Short Standard Long
0.125nm 0.08µs ／ 2080Hz
0.25nm 0.08µs ／ 2080Hz
0.5nm 0.08µs ／ 2080Hz
0.75nm 0.08µs ／ 2080Hz 0.2µs ／ 2080Hz
1.5nm 0.08µs ／ 2080Hz 0.2µs ／ 2080Hz 0.4µs ／ 1560Hz
3nm 0.2µs ／ 2080Hz 0.4µs ／ 1560Hz 0.8µs ／ 780Hz
6nm 0.4µs ／ 1560Hz 0.8µs ／ 780Hz 1.2µs ／ 520Hz
12nm 0.4µs ／ 1560Hz 0.8µs ／ 780Hz 1.2µs ／ 520Hz
16nm 0.8µs ／ 780Hz 1.2µs ／ 520Hz
24nm 1.2µs ／ 520Hz
32nm 1.2µs ／ 520Hz
48nm 1.2µs ／ 520Hz
96nm 1.2µs ／ 520Hz
10) Transmission switch: Circulator + Diode limiter
11) Mixer: MIC front end
12) Intermediate frequency amplifier: Intermediate frequency = 60MHz
Band width = 20MHz (0.08µs)
6MHz (0.2 and 0.4µs)
3MHz (0.8 and 1.2µs)
Gain = 90dB min.
Receiver characteristic = Logarithmic receiver
13) Overall noise figure: 7.5dB (average)
14) Wind Load: 51.5m/s (100knots) relative

JRC JMA-3910-4 Specifications

General

Brand	JRC
Model	JMA-3910-4
Category	Marine Radar
Language	English