Description
Garmin GA 38 GPS/GLONASS Antenna | Boat Supply Store
For boaters requiring precise positioning in challenging marine environments, this external antenna integrates both GPS and GLONASS satellite constellations for superior accuracy and rapid signal lock. Its fully gasketed, high-impact plastic alloy housing boasts an IPX7 waterproof rating, ensuring operational integrity across temperatures from -22°F to 176°F. Offering three distinct mounting solutions, including under-deck installation for a clean profile on fiberglass hulls, this antenna significantly boosts signal reception for compatible chartplotters and GPS units.
Key Features
- Enhanced Accuracy with dual GPS and GLONASS satellite support
- Robust Protection via IPX7 waterproof, low-profile housing
- Versatile Installation with pole, surface, and under-deck mounting options
- Improved Signal Reception for compatible built-in GPS devices
- Extended Reach with included 32 ft (10 m) antenna cable
- Durable Construction from high-impact plastic alloy
- Wide Operating Temperature Range from -22°F to 176°F
- Reliable Performance for offshore navigation and coastal cruising
Specifications
| Product Specifications | |
|---|---|
| Antenna Type | External GPS/GLONASS |
| Waterproof Rating | IPX7 |
| Dimensions | 3.75" x 1.95" (95.2 mm x 49.5 mm) |
| Weight | 7.1 oz (201 g) |
| Operating Temperature | -22°F to 176°F (-30°C to 80°C) |
| Case Material | Fully gasketed, high-impact plastic alloy |
| Cable Length | 32 ft (10 m) |
| Mounting Solutions | Pole, surface, under-deck |
Who This Is For
Boaters and anglers demanding superior positional accuracy and faster satellite acquisition for their marine navigation systems. Ideal for those with compatible Garmin chartplotters or GPS units seeking to optimize signal reception through an external antenna solution.
How It Compares
| Feature | Garmin GA 38 GPS/GLONASS Antenna | Competitor |
|---|---|---|
| Satellite Support | GPS/GLONASS | GPS/GLONASS, GPS/GLONASS |
| Waterproof Rating | IPX7 | IPX7, IPX6 |
| Under-Deck Mounting | Yes | No, No |
| Cable Length | 32 ft (10 m) | — |
Common Concerns Answered
Is the cable length sufficient for all vessel sizes?
While the included 32 ft (10 m) cable is adequate for most vessels, some users on exceptionally large yachts may find it necessitates extension or alternative routing.
Can signal interference be an issue with the Garmin GA 38?
Optimal mounting is critical for signal integrity. Users have occasionally reported interference, which is typically mitigated by ensuring the antenna is positioned away from potential signal-disrupting sources and has a clear view of the sky.
Will this antenna significantly improve my GPS accuracy?
The dual GPS/GLONASS support provides a demonstrably higher satellite count, leading to faster fix times and improved accuracy, especially in areas with limited sky view or signal obstruction, making it a worthwhile upgrade for precision navigation.
Frequently Asked Questions
What is the difference between GPS and GLONASS?
GPS (Global Positioning System) is a U.S.-developed satellite navigation system, while GLONASS is the Russian equivalent. Using both simultaneously allows for a greater number of visible satellites, resulting in faster acquisition times and enhanced accuracy, particularly in challenging signal environments.
Can the Garmin GA 38 be used with any GPS device?
The Garmin GA 38 is designed to provide a GPS/GLONASS signal to compatible Garmin chartplotters and GPS devices that feature an external antenna port and are programmed to utilize an external antenna. Compatibility should be verified with your specific marine electronics manufacturer.
What are the mounting options for the Garmin GA 38?
This unit includes three versatile mounting solutions: a pole mount, a surface mount, and an under-deck mount specifically designed for installation through fiberglass decks, offering flexibility for various installation preferences and vessel configurations.
Is the Garmin GA 38 waterproof?
Yes, the Garmin GA 38 features a fully gasketed, high-impact plastic alloy housing with an IPX7 waterproof rating, ensuring protection against water ingress during marine operations.
What is the cable length included with the Garmin GA 38?
The Garmin GA 38 comes with a 32 ft (10 m) antenna cable, providing ample length for most typical installations on recreational vessels.
