The MD69BRX compass bearing repeater is equipped with dual scale 36:1 precision compass card display, and provided as a bowl-only option for retrofit or replacement into third party gimbal rings. Ship’s Digital NMEA heading data may be conveniently displayed at any suitable location on a vessel to take celestial and terrestrial bearings.
Available retrofitting kits come with either gimbal bearings or pins, to fit most third party gimbal rings. Contact us for more information.


• Fits a range of third party gimbal rings
• Dual scale 36:1 precision concentric dial display
• Balanced for taking bearings using our optional sights
• Automatic selection and prioritisation of NMEA heading data type
• Automatic warning of loss of valid heading data
• Automatic detection of a previously lost heading data type without requiring a reset
• True / Magnetic Source Indication
• Local and Remote dimming control


• Repeats the heading display of a ship’s magnetic or gyro compass at a convenient location on a vessel
• Allows celestial and terrestrial bearings to be taken when used in conjunction with the MD69AZI Azimuth Sight or the MD69BC Bearing Circle. The MD60A2K Telescopic Alidade is recommended for making detailed azimuth measurements


• MD69BRX/B1 – Gimbal Bearings Retrofitting Kit
• MD69BRX/P1 – Gimbal Pins Retrofitting Kit for 254mm pitch Pins
• MD69BRX/P2 – Gimbal Pins Retrofitting Kit for 273mm pitch Pins



Weight: 7.0 kg (optimally balanced for Azimuth Sight)
H 176 mm; W 245.5 mm**; Body Ø 246 mm.
Outer dial Ø 185 mm; Inner dial Ø 95 mm.
Verge ring 20 mm (visible)
* See below dimensions for mounting kits.
**Suits Azimuth ID Ø246.3 mm
Mounting: Third Party Gimbal & Trunnions
Connections: Multicore cable through watertight gland
Construction: Aluminium alloy enclosure
Finish: RAL7040 Window Grey, semi-gloss


Power Supply: 24 V dc 8 W nominal (22-31 V dc)
Data input: RS422 NMEA 0183; Automatic Baud rate
detection (4800 to 38400)
Data sentences: HDT, HDG and HDM; selected in descending
order of priority
Cable: 2.5 m multicore data cable tail


Performance: ± 0.01° resolution
Follow-Up Rate: 20° per second
Gimbal Action: ±45° pitch and roll
Display: Dual scale 36:1 rotating dial display
Heading LEDs: Blue = True Heading; Yellow = Magnetic Heading
Resolution: Outer scale marked at 1°, 5°, 10° & 45°; Inner scale marked at 0.1° & 1°
Illumination: LED array with local & remote dimming control; red tint
Error Indication: Loss of valid data: Dial oscillates ±35° about the last known good heading; dial illumination flashes


IP rating: IPX6
Operating temp: -25°C to +55°C
Shock: STANAG 4549 – NS (0.03; 3.0; 300)
Vibration: MIL-Std-167-1A / IEC 60945
EMC: MIL-Std-461E / IEC 60945
Thermal: MIL-Std-810F / IEC 60945
Noise: MIL-Std-1474D <= 53 dB
Compass: Safe Distance 100 cm