Onwa KRA-1009_N Radome Marine Radar Antenna

Features

• Digital Radar Target Technology
• Share the same protocol between all ONWA magnetron pulse Radar antennas
• Built-in excellent sea and rain clutter algorithm
• Fully Digital Signal Processing
• High Performance Microwave front end
• Can be connected to PC directly or through home router
• Can use with DigiNav Application Software​

Antenna Radiator 

Radiator

Slotted waveguide Array

Radiator Length

46 cm

Antenna Rotation Speed

Long Range (3~36nm): 24 RPM (±2)
Medium Range (1.5~ 3 nm): 36 RPM (±2)
Short Range (0.125~1.5 nm): 48 RPM (±2)

Wind Resistance

Relative wind speed 100 knots(51.5 m/s)

Beam Width

Horizontal 5°
Vertical 25°

Sidelobe

Within ± 20° off mainlobe; less than -18 dB
Outside ± 20° off mainlobe; less than -23 dB

Polarization

Horizontal

 Transceiver Module (contained in Radome) 

Transmitting Tube

MSF1421B or MAF1421B

Frequency

9410 ± 30MHz (X-band)

Pulse Length PPR

0.08 µ S/2100 Hz(0.125, 0.25, 0.5, 0.75, 1.5 nm)
0.3µ S/1200 Hz(1.5, 2, 3 nm)
0.8 µ S/600 Hz(3, 4, 6, 8, 12, 16, 24, 36nm)

Warm Up time

1:30 minutes

Peak Output Power

4 kW nominal

Modulator

FET Switching Method

IF

60MHz

Tuning

Automatic or Manual

Receiver front end

MIC (Microwave IC)

Bandwidth

Tx pulselength 0.3 µ S and 0.08 µ S: 25 MHz
Tx pulselength 0.8 µ S: 3 MHz

Duplexer

Circulator with Diode Limiter

 Environment 

Temperature

Antenna unit: -25 to +70°C

Humidity

Relative humidity 93% or less at 40°C

 Power Supply 

10.5VDC to 40.0 VDC Built-in Power-Supply