9
6 kW Specifications
6 kW scanner
DC input
10.8 to 42 V (DC 12, 24 V or 32 V systems)
Scanner type
Open array
Scanner dimensions
Swing circle 4.3 ft (1320 mm)
Height 17.6" (448 mm)
Scanner weight
63.9 lbs (29 kg) ±10%
Vibration
Amplitude 3mm (0 to 500cpm)
Amplitude 0.75mm (500 to 1500cpm)
Amplitude 0.2mm (1500 to 3000cpm)
Waterproof IPX6
Scanning mode
Raster scanning, PPI
Plane of polarization
Horizontal
Preheating time
Minimum 90 seconds
Power consumption
120 W (maximum) at maximum wind velocity
Emission type
P0N. Passed JRC FCC/IC/R&TTE Type Certification:
FCC ID: CKENKE250
IC ID: 768C-NKE250
R&TTE: QQ-RTTE-02/03-02
Peak power output
6 kW ±50% under any pulse condition
Transmitter frequency
9410 ±30 MHz
Transmitter tube
Magnetron NJRC Model MSF1422B
Horizontal beam width
1.8º ±10% (-3 dB width)
Vertical beam width
20º ±20% (-3 dB width)
Side lobe level
Below -28 dB maximum (outside ±10º)
Below -23 dB maximum (within ±10º)
Rotation rate
Approximately 27 rpm (minimum 20 rpm at 70 knot wind
maximum)
Pulse length/PRF
0.08µs ±30% 2250 Hz ±5%
0.25µs ±25% 1700 Hz ±5%
0.5µs ±25% 1200 Hz ±5%
1.0µs ±25% 650 Hz ±5%
Duplexer
Circulator and diode limiter
Model NJRC NJS6930
Mixer MIC
front-end
IF amplifier
Center frequency 60 MHz ±3 MHz
IF bandwidth
20 MHz ±3 MHz (0.08µs)
6 MHz ±2 MHz (0.25µs)
3 MHz ±1 MHz (0.5µs, 1.0µs)
IF characteristic
Log
IF output
-2 V for 100 dB typical
Bandwidth controlled by serial port
Com port
RS485 9600 bps Half Duplex
Defined in NKE-250 Digital COM specification
TX/Motor ON/OFF independent control software included
Gain
Minimum 90 dB
Noise figure
NJT1969 @6 dB (average) at front-end input
Temperature range
+5ºF to +131ºF (-15ºC to +55ºC)
Relative humidity
93% at +104ºF (+40ºC)
Relative wind velocity
118 ft (36 m)/sec (maximum 70 knots)
42
Northstar 6 kW Radar Installation Manual
