GSD 28 Garmin Sonar Module

GSD 28 Garmin Sonar Module

Garmin GSD 28 Sonar Modules are a high-powered, black-box sonar designed for serious offshore sport fishing, offering extreme depth capabilities and enhanced target separation through advanced CHIRP technology. It provides fast, detailed underwater imaging to compatible Garmin chart plotters.

Garmin GSD 28 Sonar Module Key Features

• Extreme Depth Performance: Capable of reaching maximum depths of up to 10,000 feet (3,048 meters), ideal for deep-sea fishing.

• RapidReturn™ Sonar: This feature provides a fast deep-water scrolling sonar with a ping rate 2 to 6 times faster than its predecessor (GSD 26), enabling quick, informed decisions based on real-time data.

• xCHIRP Technology: Delivers crisp and clear fish arches with excellent target separation, making it easy to distinguish between bait and sport fish.

• High Power Output: The module can output between 300 watts to 3 kW RMS, supporting dual-channel CHIRP across a wide frequency range of 25-250 kHz, depending on the connected transducer.

• Heave Compensation: When paired with the optional MSC™ 10 external satellite compass (sold separately), the system can greatly reduce the effects of wave and swell on sonar returns, ensuring a smooth bottom image and precise targeting in rough seas.

• Durability and Build: It is built to withstand harsh marine environments with a fully gasketed aluminium housing, steel back panel, and a water-resistant IPX7 rating.

Garmin GSD 28 Sonar Module FAQs

• What are the primary performance specs?

• Power: It outputs between 300 watts and 3 kW.

• Depth: It can reach extreme depths of up to 10,000 feet.

• Frequency: Operates in the 25 to 250 kHz range.

• Scrolling Speed: Features RapidReturn sonar technology, which provides a ping rate 2 to 6 times faster than previous modules like the GSD 26.

• Which transducers are compatible?

• The GSD 28 is compatible with a wide range of high-performance Airmar transducers (1 kW+).

• It supports dual-channel CHIRP, allowing you to use two single-element transducers or one dual-element transducer.

• Specific compatibility can be verified through the Garmin Transducer Selection Guide.

• What features improve the sonar image?

• Heave Compensation: Provides smooth bottom returns and precise target identification by accounting for boat movement in rough seas.

• xCHIRP Technology: Delivers enhanced target separation and crisp fish arches for better clarity.

• What are the installation requirements?

• Mounting: Must be mounted in a well-ventilated, dry location where it will not be submerged.

• Connectivity: Connects to compatible Garmin GPSMAP chartplotters via the Garmin Marine Network.