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Description

The ONWA KRA‑1009N is a compact 4 kW X‑band radome radar antenna, designed for reliable yacht navigation in all weather conditions. This network radar combines ONWA's proven magnetron radar technology with fully digital signal processing, providing clear and stable target display, even in rain, rough seas or busy shipping traffic.

Thanks to its lightweight and enclosed radome design, the KRA‑1009N is particularly suitable for mounting on sailing and motor yachts where space and weight are important considerations, such as mast mounting. The radar communicates via Ethernet and is intended for use in combination with compatible ONWA (KM-Series / K-Astral) chart plotters, where radar image and radar overlay are fully processed by the plotter.

Specifications

Type: Network radar antenna (radome)
Transmit power: 4 kW nominal
Frequency: X-band 9.410 ± 30 MHz
Antenna: Slotted waveguide
Antenna diameter: 46 cm
Beam width:
- Horizontal: 5°
- Vertical: 25°
Antenna rotation speed:
- Short range (0.125–1.5 NM): 48 RPM
- Medium range (1.5–3 NM): 36 RPM
- Long range (3–36 NM): 24 RPM
Maximum range: up to 36 nautical miles
Clutter suppression: Built-in sea and rain clutter algorithms
Signal processing: Fully digital
Power supply: 10.5 – 40 V DC (internal power supply)
Ambient temperature: −25 °C to +70 °C
Wind load: Up to 100 knots relative wind speed
Weight:

In the box

ONWA KRA‑1009N radome radar antenna
Permanently mounted network/power connection (15 meters with RJ45 connector)
Mounting and fastening materials
Installation and user documentation

Certifications

Radio Equipment Directive (RED) 2014/53/EU (ICR Polska/VC/HS220503)

Supported Chart Plotters

The KRA‑1009N is designed to work with ONWA chart plotters that support radar functionality, specifically:

ONWA KM-series (such as KM‑8 and KM‑12 and K-Astral 8 and K-Astral 12)
Other compatible ONWA multi-function displays with radar support

The radar uses a proprietary ONWA protocol and is not intended for integration with chart plotters from other brands.

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KRA-1009N Radome Yacht Radar

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