Koden MDC-7912P/7925P X-Band Marine Radar

Koden MDC-7912P / MDC-7925P 12 kW / 25 kW X-Band IMO Marine Radar System

The Koden MDC-7912P (12 kW) and MDC-7925P (25 kW) constitute Koden’s IMO-type-approved X-Band (9410 MHz ±30 MHz) shipborne radar platform designed for SOLAS vessels under 10,000 GT. Built around a modular three-unit architecture—comprising the MRD-108P 19-inch SXGA (1280 × 1024) LCD display unit, the MRO-108P dedicated trackball/keyboard operation unit, and the up-mast RB808P (12 kW) or RB809P (25 kW) open-array antenna scanner—the system integrates high-speed short-range digital signal processing (DSP), 100-target Target Tracking (TT / ARPA), and a built-in 900-target AIS interface.

The MDC-7912P/7925P series replaces legacy analog receiver chains with 16-level video quantization and Constant False Alarm Rate (CFAR) clutter suppression, ensuring reliable target discrimination in heavy sea states and dense coastal traffic.

Features

1. High-Speed Short-Range DSP & 16-Level Video Quantization: Samples radar returns at 3× the rate of previous-generation Koden radars with 16-level video gradation, separating closely spaced buoys, small craft, and harbor structures on 0.125 NM and 0.25 NM scales.
2. IMO-Compliant 100-Target ARPA (TT) with Trial Maneuver: Automatically acquires and tracks up to 100 targets simultaneously with CPA/TCPA alarms, true/relative vector trails, and simulated trial maneuver plotting.
3. Native 900-Target AIS Overlay & Target Association: Built-in high-speed IEC 61162-2 interface processes up to 900 AIS targets and fuses AIS transponder data with ARPA radar tracks to eliminate target swap.
4. Brushless Direct-Drive Scanner Architecture: Both the RB808P (12 kW) and RB809P (25 kW) turning units utilize maintenance-free brushless DC motors rated for 24 rpm continuous rotation in wind loads up to 100 knots.
5. VDR-Ready Analog RGB Output & BAM Compliance: Includes a dedicated 1280 × 1024 SXGA analog RGB output for VDR image capture alongside IEC 62923 / MSC.302(87) Bridge Alert Management (ALF/ALC/HBT) integration.

Applications

• SOLAS Cargo & Tanker Vessels (300 GT to 10,000 GT): Primary or secondary IMO X-Band navigation radar compliant with MSC.192(79) carriage requirements.
• Offshore Support Vessels (OSVs), Anchor Handlers & Tugs: High-resolution close-quarters station-keeping and rig-approach monitoring using 4 ft or 6 ft open arrays.
• Commercial Fishing Trawlers & Seiners: Long-range 64 NM / 96 NM bird/weather detection and high-gain buoy tracking in rough North Atlantic or Pacific sea states.
• Passenger Ferries & Coastal Ro-Ro Ships: Dedicated Ferry Mode instantly inverts the heading line and screen orientation by 180° for double-ended bridge operations.
• Dredgers, Pilot Boats & Workboats: Rugged IPX6 scanner enclosure and wide 21.6–41.6 VDC input tolerance handle severe engine-room voltage transients.

Frequently Asked Questions

What is the difference between the Koden MDC-7912P and the MDC-7925P?

The primary difference is transmitter peak output power, scanner gearbox model, and maximum range scale. The MDC-7912P uses the RB808P 12 kW transceiver rated up to 64 NM (72 NM extended) with a power draw of ≤ 150 W, whereas the MDC-7925P uses the RB809P 25 kW transceiver rated up to 96 NM with a power draw of ≤ 200 W. Both models share the identical MRD-108P 19-inch display, MRO-108P operation unit, and 4 ft / 6 ft / 9 ft open-array radiators.

Is the Koden MDC-7912P approved for SOLAS commercial vessels?

Yes. The Koden MDC-7912P and MDC-7925P meet IMO Resolution MSC.192(79) and IEC 62388 Ed. 2 standards for mandatory X-Band radar carriage on SOLAS vessels under 10,000 gross tonnage (GT), and hold MED (Wheelmark) and major classification society type approvals.

Can the MRD-108P display unit connect directly to a Voyage Data Recorder (VDR)?

Yes. The rear panel of the MRD-108P includes a dedicated analog RGB video output port delivering a standard 1280 × 1024 (SXGA) signal at 60 Hz, allowing direct connection to any IMO-compliant VDR video frame grabber without external scan converters.

Does the Koden MDC-7912P require an external processor box for ARPA or AIS?

No. Both 100-target ARPA (Target Tracking) and 900-target AIS processing are built directly into the MRD-108P display unit as standard features. External heading (HDT/THS) and speed (VBW/VHW) inputs are required to activate ARPA vector calculations.

Which scanner cable is used between the RB808P scanner and the MRD-108P display?

The system uses Koden’s composite multi-core shielded interconnect cable series CW-845, available in standard factory-terminated lengths of 15 m (CW-845-15M), 20 m (CW-845-20M), 30 m (CW-845-30M), 40 m (CW-845-40M), and 50 m (CW-845-50M).

Can the Koden MDC-7912P run on 110 VAC or 220 VAC shipboard mains?

The MRD-108P display unit accepts 21.6 to 41.6 VDC directly. For vessels supplying 100–115 VAC or 220–240 VAC (50/60 Hz) main/emergency power, an approved marine AC/DC power supply rectifier unit (such as the Koden PS-010 or equivalent 24 VDC / 15 A marine power supply) must be installed upstream.