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MD77HRB Dial Heading Repeater

SKU: MNE-0005

MD77HRB Dial Heading Repeater

  • Compact Heading Repeater with a clear and easy to read analogue dial display of heading data


  • Traditional Marine Compass Card Display
  • NMEA Digital Input
  • Automatic Baud Rate Detection
  • True and Magnetic Source Indication
  • Rotary Dimming Control with Remote
  • Rugged, Marinised Aluminium Construction


The MD77HRB from MARINE DATA is a NMEA-based Compact Heading Repeater with a clear and easy to read analogue dial display of heading data. The 118 mm diameter dial is graduated in 1-degree increments. The MD77HRB is housed in a robust, compact aluminium enclosure fitted with a rotary encoder for controlling the level of background illumination. Finished in jet black to complement other marine navigation equipment, it is ideal for any vessel.
When multiple heading sources are available in the heading data (e.g. True and Magnetic) the MD77HRB automatically prioritises and indicates which heading source is in current use. The encoder has a pushbutton facility for an internal self-test.
Compact and rugged, the MD77HRB offers a heading repeater solution for digital heading data (ship’s heading) to be displayed and monitored at any convenient location on a vessel. Suitable for locations where the available space is limited and may be either bulkhead or panel mounted.
The MD77HRB from MARINE DATA: Flexible in the application, easy to install and simple to maintain.


  • Automatic selection and prioritisation of NMEA heading data type
  • Prioritisation of heading type: HDT (true), HDG (magnetic + variation), HDM (magnetic)
  • Automatic warning of loss of valid heading data and automatic detection of a previously lost heading data type without requiring a reset
  • Rotary dimming control with remote connection; Supply under-voltage lock-out


  • The MD77HRB displays True or Magnetic Heading Data transmitted from marine equipment compatible with NMEA 0183
    (IEC 61162-1) (Gyro compass, TMC, EMC, GPS Compass etc.)


MD77TB Bulkhead Mounting Kit for MD77 Range, Jet BlackMNE-0031 – MD77TB Bulkhead Mounting Kit for MD77 Range

Bulkhead Mounting Kit for MD77 Series of equipment. Finished in Jet Black (RAL9005) Fine-Texture Powder Coat or Finished in Window Grey (RAL7040) Semi-Gloss Powder Coat

Repeater Trunnion Bracket Assembly used for mounting the MD77 range of equipment in the following ways:

  • Bulkhead Mounted
  • Ceiling / Deckhead Mounted
  • Desktop / Console Mounted

Used with the following products:

  • MD77 Series of equipment


By Marine Data

Additional information

Weight 1.9 kg
Dimensions 33.00 × 24.00 × 21.00 cm
Item Measurements

Please see Data Sheet

Item Measurements

Please see Data Sheet