Garmin GSD 28 Sonar Module, 10-32V, 25-3000W RMS, Dual-Channel CHIRP 25-250 kHz, IPX7, Garmin BlueNet Network

Overview

The Garmin 010-02797-00 is a GSD 28 sonar module that adds dual-channel CHIRP traditional sonar to compatible Garmin chartplotters over the Garmin BlueNet marine network. Output is 300 W to 3 kW RMS (transducer dependent), with CHIRP support from 33 to 250 kHz and a listed maximum depth up to 10,000 ft (3,048 m) when paired with the right transducer.

It runs on 10 to 32 V DC, draws up to 120 W, and uses a 15 A fuse. The enclosure is IPX7-rated and measures 10.7 in x 14.4 in x 4.0 in, so it is straightforward to plan for space, wiring clearance, and airflow in a console, electronics locker, or other protected compartment.

Key features

• Dual-channel CHIRP sonar module with 300 W to 3 kW RMS transmit power (transducer dependent)
• CHIRP operating range from 33 to 250 kHz and maximum depth up to 10,000 ft (3,048 m) (transducer dependent)
• Two bare-wire sonar connections for wiring transducers to the low and high channels
• RapidReturn and xCHIRP processing for faster screen updates and clearer target separation on supported setups
• One Garmin BlueNet network port for integration with compatible Garmin chartplotters and network switches
• IPX7 water rating with a fully gasketed housing for spray and washdown environments
• 10 to 32 V DC input, up to 120 W draw, protected by a 15 A fuse

Compatibility and fit

A transducer is required, and the module supports a wide range of Garmin and AIRMAR transducers (sold separately). It also works well for retrofits where the boat already has a bare-wire transducer, since the sonar connections are made at the internal terminal block and can be configured from a networked chartplotter.

This unit does not support water speed wheels, so any paddlewheel speed input should remain on a separate sensor or instrument interface.

Installation and setup

Plan the mounting location so the module cannot be submerged and has ventilation. Leave enough clearance to access the power and network connections and to route the transducer cable cleanly without tight bends or strain.

If you are replacing a GSD 26, the GSD 28 is horizontally smaller and uses the same size mounting screws. In many upgrades, two existing mounting holes can be reused on one side while the opposite side is re-drilled to match the new footprint.

The sonar module does not operate with the terminal block lid removed, and unused cord grips should remain plugged and tightened to help keep moisture out of the wiring area.

Electrical and network integration

Power is 10 to 32 V DC, which covers both 12 V and 24 V systems. On boats with both available, connecting to 24 V DC is preferred for best performance. Keep the in-line 15 A fuse in place and use proper marine wiring practices for any power-cable extension.

Network connection is through a Garmin BlueNet port. On Garmin BlueNet systems, connect to an open BlueNet port on a chartplotter or a BlueNet switch. On mixed or legacy Garmin Marine Network installs, the supplied legacy adapter hardware helps bridge existing network cabling without re-running the entire boat.

Use on board

This module is a strong fit for boats that spend time in deeper water and want traditional sonar returns that refresh quickly, such as offshore sportfishing boats running canyon edges, deep drops, or bait schools. In rougher seas, pairing it with an MSC 10 external satellite compass (sold separately) enables heave compensation to reduce wave and swell effects on returns.

What’s included

• GSD 28 sonar module
• 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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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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