GSD 28 Advanced Sonar ModuleSee whats down there. Catch whats down there. Take sport fishing to extreme depths with a high-powered sonar module with the features that are needed to improve the chances of success.Features:Engineered for offshore sport fishingSee sonar faster with Garmin RapidReturn technologyCrisp and clear fish targets with Xchirp technologyExcellent target separation with xCHIRP technologyGreatly reduce wave and swell from bottom returns with heave compensationGarmin RapidReturn SonarThis high-performance technology provides Garmin’s fastest deep-water scrolling sonar with 2 to 6 times the ping rate of Garmin’s GSD 26 sonar. This allows captains to make fast and informed decisions based on what is below their boats.xCHIRP TechnologyEasily 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.Heave CompensationWhen the seas get rough, use the MSC 10 external satellite compass (sold separately) to greatly reduce wave and swell from the sonar returns.CompatibilityTransducer SupportThis sonar module is compatible with a wide range of Garmin and AIRMAR transducers (sold separately).RetrofittingThe GSD 28 module is ideal for retrofitting boats with existing bare wire transducers.PerformanceSonar PowerGSD 28 can output 300 watts to 3 kW at extreme depthsCHIRP SupportThe module supports dual-channel CHIRP (up to 3 kW per channel).Operation RangeThe GSD 28 sonar module can operate in the 25 to 250 kHz frequency range.Built to LastGSD 28 is rated for harsh marine environments and water resistance with an IPX7 rating.In the Box:GSD 28Power cableGarmin BlueNet marine network cable (6 ft) with legacy network adapterField-installable adapter kit for the Garmin BlueNet networkMounting hardwareDocumentationSpecificationsGeneral:Case Material: Fully gasketed, aluminum housing, steel back panel, plastic access panelPhysical Dimensions: 10.7″ 14.4″ 4.0″ (27.06 cm 36.66 cm 10.1 cm)Weight: 14.13 lbs (6.4 kg)Water Rating: IPX7Temperature Range: 5 F to 158 F (from -15 C to 70 C)Electrical Features:Power Input: 10-32 VPower Usage: 120 W maximumFuse: 15ASonar Features:Frequencies Supported: Dual channel CHIRP: 25-250 kHz (transducer dependent)Transmit Power: 300W3kW RMS (transducer dependent)Maximum Depth: 10,000 ft. (3,048 m)xCHIRP: YesRapid Return: YesConnections:Garmin Marine Network Ports: (Garmin BlueNet)Sonar Connections: 2 bare wireWARNING: This product can expose you to chemicals including NICKEL (METALLIC) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.