The Marine Data MD69BRX is a specialized NMEA digital compass bearing repeater bowl engineered by Marine Data Systems in the United Kingdom specifically for retrofit applications. Designed to directly replace legacy mechanical or obsolete synchro/stepper repeater bowls inside existing third-party pelorus pedestals, gimbal rings, and bridge wing stands, the MD69BRX updates older vessel heading indicator hardware to modern digital NMEA 0183 standards without requiring costly structural modifications.

The repeater bowl incorporates a high-visibility dual-scale concentric compass card display (360° outer scale combined with a 10° expanded inner scale) providing 0.1° heading resolution. Built into a waterproof, marine-grade alloy housing, the MD69BRX automatically processes NMEA 0183 serial heading data ($HDT, $HDG, $HDM, $THS) from gyrocompasses, satellite compasses, and magnetic compass systems. Variable red LED dial illumination ensures optimal night-vision compliance during nocturnal watchkeeping on the bridge wings.

Key Features:
• Direct Retrofit Design: Custom physical housing dimensions designed to drop directly into existing third-party pelorus pedestals, stand mounts, and bearing brackets.
• Dual-Scale High-Resolution Display: Concentric dual-card layout (360° outer / 10° expanded inner) for accurate visual bearing observations.
• Universal NMEA 0183 Interfacing: Decodes serial NMEA data ($HDT, $HDG, $HDM, $THS) with automatic baud rate detection from modern navigation sources.
• Variable Red Night Illumination: Dimmable red LED backlighting controlled locally or via remote NMEA dimming commands for night-watch operation.
• Rugged Waterproof Construction: IP67-sealed marine-grade aluminum alloy housing built to endure harsh weather on exposed bridge wing stands.