Garmin GSD 28 Sonar Module

Take your sport fishing to extreme depths with the GSD 28, a high-powered sonar module with features to improve your chances for success down to 10,000’ (transducer-dependent). Garmin RapidReturn sonar provides quicker returns on your chartplotter with 2 to 6 times the ping rate of our industry-leading GSD 26 module, so you see fish before you’re out of range. Easily distinguish bait from sport fish, and get
our clearest sonar with next-generation xCHIRP technology. The GSD 28 sonar module 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).

GARMIN RAPIDRETURN™ SONAR

This high-performance technology provides Garmin’s fastest deep-water scrolling sonar with 2 to 6 times the ping rate of the industry leading GSD™ 26 sonar. This allows captains to make fast and informed decisions based on what is below their boats.

NEXT-GENERATION xCHIRP SONAR

This sonar technology provides our clearest fish arches for excellent target separation, smooth bottom returns, and precise targeting down to 10,000’. Easily distinguish bait from sport fish with Garmin’s clearest traditional sonar fish arches and excellent target separation. Get smooth bottom returns and precise targeting at extreme depths.

HIGH POWER OUTPUT

The GSD 28 sonar module can output between 300 watts to 3 kW; this provides superior depth capabilities.

HEAVE COMPENSATION

When the seas get rough, use your GSD 28 with the MSC™ 10 external satellite compass (sold separately) to greatly reduce wave and swell from your sonar returns.

WIDE TRANSDUCER COMPATIBLITY

This sonar module is compatible with a wide range of Garmin and AIRMAR® transducers (sold separately). Additionally, the GSD 28 module is ideal for retrofitting boats with existing bare wire transducers.

PERFORMANCE

The module supports dual-channel CHIRP (up to 3 kW per channel). The GSD 28 sonar module can operate in the 25 to 250 kHz frequency range (transducer dependent).

MARINE-RATED

The GSD 28 is rated for harsh marine environments and water-resistance with an IPX7 rating.