Garmin GSD28 Sonar Module
Model: 010-02797-00
- 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 |
| Physical 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 | IPX7 |
| Temperature range | From 5° F to 158° F (from -15° C to 70° C) |
| Electrical Features | |
| Power input | 10-32 V |
| Power usage | 120 W maximum |
| Fuse | 15A |
| Sonar Features | |
| Frequencies supported | Dual channel CHIRP: 25-250 kHz (tranducer dependant) |
| Transmit power | 300W—3kW rms (transducer dependant) |
| 300W—3kW rms (transducer dependant) | 10,000 ft (3,048 m) |
| xCHIRP | Yes |
| Rapid return | Yes |
| Connections | |
| Garmin Marine Network Ports | 1 (Garmin BlueNet) |
| Sonar connections | 2 bare wire |
What’s in the Box:
- GSD 28
- Power cable
- Garmin BlueNet™ marine network cable (6 ft) with legacy network adapter
- Field installable adapter kit for the Garmin BlueNet network
- Mounting hardware
- Documentation






















