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 Aug 6 - Aug 11

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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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NJ Nana
Bozeman, US
★★★★★ 5
Comfort
Size: 36DD, Color: Nude
Comfortable
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Reviewed in the United States on May 23, 2026
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SassC
Phoenix, US
★★★★★ 4
Pretty, comfortable bra; small issue with cup structure
Size: 44D, Color: Black, Size: 44D, Color: Black
This is the first underwire bra I’ve worn in about six years - I’ve been wearing sport bras, so I wasn’t sure I’d like it. This bra is pad free, lightweight, and made of very pretty lace. When I put it on, the underwire was not uncomfortable, and the bra itself fit relatively well. I was surprised that the band in the back was also comfortable, not digging into my skin. The bra is well-made with one exception. I think the top of the cup requires more structure. I feel that it’s a little too loose and the contents will fall out if I was to lean over too far or if I were to run or do anything slightly athletic. I like the bra - it’s comfortable and pretty but it has that one issue with the cup structure. I’ve decided that this would not be a good bra to wear all day, but because it is so pretty, I would wear it with evening wear only.
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Reviewed in the United States on May 15, 2026
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Verified Purchase
TeeJae
New York, US
★★★★★ 3
Seam shows right in the center of your brea$t!
Size: 38C, Color: Dark Pink
Had to return even though I loved the fit and feel of the bra. The seam that goes across the middle and your nippies shows through on every type of shirt I wear. And one side has a little extra room which made it ripple vertically I guess because the material/lace is so thin. Real bummer. Would be nice if B cup was available. C was just a little large.
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Reviewed in the United States on May 20, 2026
R
Verified Purchase
Ryan
Bozeman, US
★★★★★ 5
The BEST braw ever!
Size: 36D, Color: Nude
This braw was the best braw I’ve ever had in my life! I’ll definitely buy more!
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Reviewed in the United States on May 9, 2026
D
Discerning
Draper, US
★★★★★ 5
This one is a keeper…
Size: 36D, Color: Nude
Bra shopping is truly one of my least favorite things to do, and it is always so frustrating to me. Online bra shopping tends to be even worse, so I had little hope for this bra but took a chance anyway. I was pleasantly surprised by how much I liked it! A true test for me is whether or not I notice I’m wearing it. I’ve worn it off and on for several days and I totally forget about it. Having nurses two babies and approaching my 40s, my girls need a lot of support and this bra delivered. I thankfully discovered years ago that if you have deflated mom boobs, an unlined cup is the best way to take what you have and give it shape. This one does just that. I have very mixed feelings on the lace though. On the one hand, it is sexy and feminine and I don’t find that in bras very much anymore (at least not ones that provide the kind of lift and support that I require). However, the lace is very noticeable through a shirt. I really can only wear this bra with a thick top or sweater. Otherwise, it’s just too noticeable and I’m not comfortable with that. Wearing a cami underneath a top helps slightly though. Overall, I’m glad I have this bra and I’ll be ordering another color. It feels well made, the material is nice, and it gives my bust a shapely (and youthful 😭) appearance. I wore it all day in 90+ heat at Magic Kingdom and it didn’t bother me at all, so it definitely qualifies as lightweight and comfortable in my book. I took a stab at a size and the 36D feels right. I *maybe* could have gotten a 34 but the 36 doesn’t feel loose on the tightest loops. On occasion, depending on the brand, I can be either a D or DD. I think this is worth trying and looks more expensive than it really is!
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Reviewed in the United States on May 12, 2026

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