Time to First Fix: 12 seconds Typical (Warm Start)
Tracking Velocity: 900 Knots
Geodetic Systems: 171 Datums ( WGS-84 and others)
DGPS:
Reference Stations: Automatically selects the best beacon station or manual frequency selection (All DGPS stations in the world are in memory)
Frequency Range: 283.5 - 325.0 kHz (all ITU regions), 0.5 kHz steps
Coverage: 200 km approx from a reference station
Sensitivity: 6 dBµV (MSK 100 bps, 10-3 BER)
Antenna Gain: 6 dB
Receiving System: Single Superheterodyne, IF: 455 kHz
Modulation and Format: Minimum Shift Keying (MSK) in RTCM SC104 format
Accuracy:
With DGPS 5 m approx (95% of the time)
Without DGPS 50 m approx (95% of the time, SA on)
Interface:
Output (NMEA 0183 ver 1.5/2.0); $GPBWC, $GPGGA, $GPGLL, $GPRMC, $GPRMB, $GPVTG, $GPZDA, $GPAPB, $GPBOD, $GPXTE, $GPAAM, $RMA, $GTD (For position entry in LORAN-C)
Input: $YMWPM (YEOMAN wpt data in NMEA0183) DGPS data in RTCM SC104 ver 2.1
DGPS Capability:
RTCM SC104 v.2.1 format in RS232C from FURUNO GR-80 DGPS Beacon Receiver
Accuracy: 5 m approx., 95% of the time
Display Specifications:
Dimensions: 4.5" diagonal; 95(W) X 60(H) mm LCD
Resolution: 120 X 64 pixels
Modes: Plotter, Highway, Steering Display, Nav Data Display and Programmable Mode
Position Indication: L/L, Loran-C or Decca TDs
Memory Capacity: 1,000 points total for ship's track, 950 waypoints (registered by cursor or L/L, TDs entry), 50 routes (30 waypoints/route)
Alarms: Arrival, Anchor watch, XTE, speed, DGPS, Time, Trip
Environment:
Temperature:
Display Unit: -15°C to +55°C
Antenna Unit: -25°C to +70°C
Waterproofing:
Display Unit: IPX5 (IEC 60529), CFR46 (USCG)
Antenna Unit: IPX6 (IEC 60529)
Power Specifications:
Supply: 12-24 VDC
Consumption: 120-160mA
Features:
Storage for 350 waypoints and 30 routes
Alarms: Arrival, Anchor Watch, Cross Track Error and Ship’s Speed
Man overboard feature records latitude and longitude or LOP (Loran C or Decca) coordinates at time of man overboard and provides continuous updates of range and bearing when navigating to the MOB position.
Menu-driven operation
Bright 95 x 60 mm LCD with adjustable contrast and brilliance
Power consumption is a low 3 W.
Provision for connection of autopilot (option) – steering data output to autopilot
Unique “Highway” display provides a graphic presentation of ship’s progress toward a waypoint.
Own ship’s position may be shown in latitude and longitude or LOP (Loran C or Decca).
Waypoint and route data can be uploaded from a PC or downloaded to a PC.
Manufacturer: Furuno
Model Number: Receiver and Navigator Display
Part Number: GP-31
Condition: In Stock, Ready to Ship! This unit is in very good physical condition and was removed from a boat that received a total electronics refit. See Photos. Guaranteed in good working order and covered by a 14 day policy. This listing is only for what is shown in the photos. No other parts or pieces are included.
