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Description
Garmin Gsd28 Sonar ModuleGarmin 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
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
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.4 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Much needed in the world we live in.
Format: Paperback
As a black man with Autism, this feel like a much needed read. Even though I just started reading it, this book is relatable to my life because I feel like some of the body of Christ is constantly demonizing Autism as it's like a curse and that to me is a spit to my face especially one who knows and loves God.
A must get.
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Reviewed in the United States on October 25, 2025
★★★★★ 5
Your Next Church Read
Format: Paperback
Brilliant. Important. Timely. Pastor Lamar calls the Western church to decenter itself so that ableism and racism will dissipate. I will go back to this book time and again for my advocacy work inside and outside of the church.
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Reviewed in the United States on March 15, 2024
★★★★★ 4
Powerful and Hard-Hitting
Format: Paperback
This book explores how racism and disability justice issues intersect and intertwine, particularly within the American church. Lamar Hardwick writes from his perspective as an autistic Black pastor, and his recent battles with cancer also inform his writing. He takes an incisive look at the ways that people sideline and make judgments about "abnormal" bodies, and he explores how different racist and ableist ideas developed in early American history, primarily related to enslaved Africans. Because I share Hardwick's interest in American history, I was already familiar with most of this information, but it will be new and eye-opening for many readers.
Hardwick clearly explains the historical connection between ableism and racism, showing how people justified slavery by arguing that Black people were intellectually inferior, were childlike, and should not have agency over their own lives. Hardwick explores both glaring and subtle implications of this ideology, and he makes a number of very excellent points. He is bold and doesn't mince words, and he explains complicated, abstract ideas in accessible terms. He also touches on a variety of side issues to his main thesis, such as desirability politics, body shame, and issues with grind culture.
Hardwick gives examples of how early American Christians contributed to pervasive cultural problems, and he also shares contemporary stories to show how problematic ideas cause harm in real life. His personal stories add a lot to the book, and I appreciate his honesty and vulnerability. I also appreciate how Hardwick uses Scripture throughout the book, especially when he is writing about disability theology. Some similar books focus primarily on personal experiences and secular social justice theories, with only loose Scriptural connections, but Hardwick bases his arguments in specific Bible passages and the big story of Scripture. I disagree with some of his interpretations, but found his arguments significantly more persuasive than ones I've seen before.
One confusing, weaker element of this book is that Hardwick begins using "ableism" as a catch-all term for any kind of hierarchy of human value. Even though different forms of discrimination can overlap in complex ways, Hardwick often uses the word "ableism" in cases where there isn't a direct reference to physical or mental abilities. Because he stretches this word's definition, readers who are new to this conversation may struggle to follow his arguments at times.
My other critique is that even though Hardwick is accurate and persuasive in his coverage of historical wrongs in the American church, he sometimes makes it sound like all of these issues started with American Christianity. Even though we can trace back particular expressions of racism and ableism to influential people like Cotton Mather, the root issues are part of the human condition. Many Christians throughout time have absorbed harmful ideas from their societies and expressed these assumptions in Christian language, but they weren't inventing these forms of oppression.
Also, even though people created specific racist beliefs to justify the institution of slavery, ableism has been an issue in all cultures since the beginning of time. Christianity began in a cultural context where it was normal and acceptable for parents to discard female and disabled infants to die in the elements, and early Christian advocacy is part of why that is so gut-wrenching and unthinkable to us now. Even though Hardwick's analysis is helpful, it's only part of the story. I think that he could have balanced it out better with more context, while still holding the same American historical figures accountable for their sins and failings.
"How Ableism Fuels Racism" covers a variety of issues in a thought-provoking, engaging way. I appreciate the author's historical analysis, thoughtful reflections, and personal stories, and I would recommend this book to people who are invested the topic. Also, even though some aspects of this book might be confusing for people who haven't read anything like this before, the author's accessible writing style, clear explanations, and personal stories can help engage readers who are new to the topic. Overall, I was impressed with this book and am interested in reading more from this author.
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Reviewed in the United States on February 21, 2024
★★★★★ 5
Amazing Book Every Church Leader Should Read
Format: Paperback
Great Book and worth reading
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Reviewed in the United States on April 6, 2024
★★★★★ 5
Provocative Read!
Format: Audiobook
I found this book to be profound, provocative, and very different than any other books I have read on racism and ableism. I never understood how ableism is the catalyst for racism, and how disability compounds racism. Highly recommend especially for those who are well versed in social justice.
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Reviewed in the United States on September 25, 2025
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