High-powered sonar black box engineered for superior sport fishing at extreme depths
Next-generation xCHIRP sonar technology provides our clearest fish arches for excellent target separation, smooth bottom returns and precise targeting
Garmin RapidReturn™ sonar is our the fastest deep-water scrolling sonar
Garmin RapidReturn™ sonar fills the sonar screen faster, allowing a captain to make fast and informed decisions based on what is below their boat
Add the MSC™ 10 external satellite compass (sold separately) to eliminate wave and swell from your sonar returns with heave compensation
Compatible with a wide range of Garmin and AIRMAR® transducers (sold separately)
Ideal for retrofitting to boats with existing bare wire transducers by using manual configuration settings
Can output 300 watts to 3 kW with a maximum depth of 10,000’ (transducer-dependent)
Supports dual-channel CHIRP (up to 3 kW per channel)
25 to 250 kHz frequency range (transducer dependent)
Rated for harsh marine environments and water-resistance with an IPX7 rating
The depths. Revealed. Take your sport fishing to extreme depths with GSD™ 28, a high-powered sonar module with features to improve your chances for success (transducer-dependent). Garmin RapidReturn™ sonar provides quicker returns on your chartplotter with 2 to 6 times the ping rate of our GSD 26, so you see fish before you’re out of range (transducer-dependent). Easily distinguish bait from sport fish, and get our clearest sonar with next-generation xCHIRP technology. GSD 28 supports a wide range of Garmin and AIRMAR® transducers (sold separately) that can be manually or automatically configured. When the seas get rough, ensure flat bottom returns with the MSC™ 10 external heave compensation sensor (sold separately).
The GSD 28 module is ideal for retrofitting to boats with existing bare wire transducers.
Specifications
General
Case material
Fully gasketed, aluminum housing, steel back panel, plastic access panel
