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Furuno GP39 GPS/WAAS Navigator w/4.2 Color LCD
Furuno GP39 GPS/WAAS Navigator delivers versatile and accurate position tracking in a compact 4.2-inch format, utilizing WAAS corrections to provide recreational and small commercial boaters with reliable nautical data.
- Display Technology: 4.2-Inch High-Resolution Color LCD.
- GNSS Engine: 12-Channel GPS With WAAS Integration.
- Data Storage: Memory For 10,000 Waypoints And 100 Routes.
- Network Protocol: NMEA 0183 Output For Integrated Electronics.
- Visual Modes: Plotter, Highway, Steering, And Nav Data Screens.
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Description
Furuno GP39 | WAAS-Enhanced Color Navigator
Reliable coastal navigation and high-visibility tracking define the Furuno GP39, which utilizes a 12-channel receiver and WAAS technology to solve the accuracy needs of non-SOLAS vessels. Its core engineering leverages a 4.2-inch color LCD to provide a variety of display modes, including Plotter, Highway, and Steering, ensuring that course-over-ground (COG) and cross-track error (XTE) data are legible in all lighting conditions. By integrating a 10,000 waypoint memory and NMEA 0183 output, the GP39 functions as a robust standalone navigator or a high-accuracy sensor for older radar and fishfinder systems requiring a stable GPS lock.
In demanding offshore environments, you’ve got to be mindful of the antenna cable’s routing to prevent RF interference from nearby VHF or Radar leads. I’ve found that signal “drifts” often occur when the antenna is mounted too close to high-power transmitters; maintain at least a 1-meter separation. Ensure your waypoint data is periodically backed up to a PC via the USB port, as frequent power surges can occasionally corrupt internal flash memory. It’s also smart to check the waterproof seal on the rear connectors after heavy saltwater exposure to maintain the unit’s IP55 environmental rating.
Technical Specifications
- Display: 4.2-inch high-resolution color LCD.
- Receiver: 12-channel WAAS-enhanced GPS engine.
- Storage: 10,000 waypoints and 100 routes.
- Interface: USB 2.0 and NMEA 0183.
- Refresh: High-speed position update logic.
- Voltage: 12-24 VDC wide-range input.
- Mount: Quick-release bracket or flush mount.
Furuno GP39 GPS/WAAS Navigator w/4.2 Color LCD Specs
| Brand | Furuno |
| Model Name | GP-39 |
| Part Number/SKU | GP39 |
| Technology Category | Compact GPS/WAAS Navigator |
| Display Size & Type | 4.2" Color LCD |
| Resolution | 480 x 272 pixels |
| Brightness | 700 cd/m2 |
| Processor/Engine | 12-Channel Parallel GPS Receiver |
| Operating System | Proprietary Furuno Interface |
| Sonar Compatibility | N/A |
| Mapping/Charts | Graphic Plotter w/ 10,000 Waypoints |
| NMEA Interface | NMEA 0183 (Output only) |
| Networking Ports | 1x Data Port (7-pin) |
| Wireless | None |
| Voltage Input | 12 - 24 V DC |
| Power Draw | 0.7 Amps Max |
| Waterproofing | IP55 (Display) / IP56 (Antenna) |
| Physical Dimensions | 175 x 100 x 80 mm |
| Cut-out Dimensions | 145 x 85 mm |
| Weight | 0.39 kg |
| Country of Origin | Made in Japan |
| Standard Warranty | 2 Years |
Furuno GP39 GPS/WAAS Navigator Guide
The GP39 is a compact GPS/WAAS navigator featuring a 4.2-inch high-resolution color LCD that provides superior readability in direct sunlight.
It utilizes a 12-channel GPS receiver combined with SBAS (WAAS/EGNOS/MSAS) technology to deliver precise position fixing for recreational and workboats.
Yes, the NMEA 0183 data output allows you to share position, COG, and SOG data with networked sonar units, radars, and VHF radios.
The unit can store up to 10,000 waypoints and 100 routes, making it a powerful tool for marking favorite fishing spots and planning coastal trips.
The GP39 features a smart "click-on" bracket, allowing for quick surface mounting or easy removal for security when the boat is unattended.






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