SKU: 55497184750

Garmin GSD 28 Advanced Sonar Module

Sale price$1349.99 Regular price$1499.99
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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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Description

Garmin GSD 28 Advanced Sonar ModuleGSD 28 Advanced Sonar Module See 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 fishing See sonar faster with Garmin RapidReturn technology Crisp and clear fish targets with Xchirp technology Excellent target separation with xCHIRP technology Greatly reduce wave and swell from

GSD™ 28 Advanced Sonar Module

See what’s down there. Catch what’s 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 fishing
  • See sonar faster with Garmin RapidReturn™ technology
  • Crisp and clear fish targets with Xchirp technology
  • Excellent target separation with xCHIRP technology
  • Greatly reduce wave and swell from bottom returns with heave compensation

Garmin RapidReturn Sonar 

This 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 Technology

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.

Heave Compensation

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

Compatibility 

Transducer Support

This sonar module is compatible with a wide range of Garmin and AIRMAR® transducers (sold separately).

Retrofitting

The GSD 28 module is ideal for retrofitting boats with existing bare wire transducers.

Performance 

Sonar Power 

GSD 28 can output 300 watts to 3 kW at extreme depths

CHIRP Support 

The module supports dual-channel CHIRP (up to 3 kW per channel).

Operation Range 

The GSD 28 sonar module can operate in the 25 to 250 kHz frequency range.

Built to Last

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

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

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: 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 (transducer dependent)
  • Transmit Power: 300W–3kW RMS (transducer dependent)
  • Maximum Depth: 10,000 ft. (3,048 m)
  • xCHIRP: Yes
  • Rapid Return: Yes

Connections:

  • Garmin Marine Network Ports: (Garmin BlueNet)
  • Sonar Connections: 2 bare wire

WARNING: 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.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 55497184750

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Ernanda Agenor
Boise, US
★★★★★ 5
Exelente
Es un buen producto te quita las manchas de la Cara y te limpia la Cara
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
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Emily H
Chelsea, US
★★★★★ 4
Too harsh on my sensitive skin for daily use
This cleanser contains a variety of emollient and moisturizing oils, but it also contains potassium hydroxide, which indicates saponification, a process that turns oil into soap. While it has the appearance of being an oily liquid, it foams up nicely on wet skin to create a luxurious lather. It has a fresh, clean soapy scent. I can't quite place it, but it reminds me of something from a long time ago. It is a little powdery and perhaps more of a mature scent, but I really like how clean it smells. Unfortunately, I find it to be quite harsh on my skin, which is likely a result of the saponification of the oils. One day of use here and there will be fine for me, but daily use makes my skin quite dry. In fact, it makes my skin squeaky clean, which is not necessarily a good thing. It is a shame because the scent is so nice, and I love the oil-to-foamy-lather formulation. Another issue is that the dropper on the bottle arrived clogged. It is really puzzling because the cleanser seems to be completely liquid. I ran the dropper under very warm water for quite some time in an attempt to clear the clog, but I was unsuccessful. So, in using the product, I've just been pouring it into my hand. This could also be contributing to my issues with dryness, as no matter how hard I try to dispense a small amount, pouring the cleanser out of the bottle inevitably results in my using more than would have been dispensed from a dropper.
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Reviewed in the United States on April 5, 2025
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Diana
Dallas, US
★★★★★ 5
Collagen Eye Patches
These are the best under eye patches that I bought. I have tried others, but none provided the results that these did. I had visible results that lasted 12 hours. Puffiness reduced, smooth skin, rejuvenated look. I will be buying more when my supply is up.
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Reviewed in the United States on May 20, 2026
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Rosey87
Houston, US
★★★★★ 4
Instant feeling of coolness but hoping I got what I paid for.
The box received isn’t the same as advertised but close. She picture. This is only second time trying a set from this box. They are soft and cooling. No unpleasant smell. It makes it fell like a spa day. And Hope to see results with use. At this point not breakout or reactions. That’s a good thing! Just not seeing results yet. Give it time, I know.
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Reviewed in the United States on January 20, 2026
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Magical Finds
Lexington, US
★★★★★ 5
Very easy to use and gives good moisturizing as well
Honestly here’s how this goes . When I first wake up after a nights rest I have the worse eyebags . So I ordered these and gave them a try . After washing my face I applied these , I kept them on for 30 minutes . When I removed them I noticed a significant amount of puffiness gone , however there was still puffiness there . So I then applied plexaderm on top . The results with both these two products are a welcome outcome . Just on there own they do a pretty good job , however with the plexaderm I got an awesome outcome .
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Reviewed in the United States on May 25, 2026

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