Superior Shallow or Deep Water Fish Targeting
Garmin has built the GSD-26 for the serious deep-sea, commercial or sportfishermen. Whether your fishing in shallow water or deep water, the GSD 26 can be adjusted to your fishing adventure and can mark structure in depths up to 10,000 feet of water.
Spread Spectrum Technology
The GSD 26’s Spread Spectrum technology scans on multiple frequencies at one time, returning vast amounts of data to the receiver. As a result, you can expect precise, shallow-water-like target separation at much greater depths – up to 10,000 ft. Compatible transducer required. If you are fishing for a specific type of fish, you can manually adjust the frequency from 25kHz to 210kHz and lock into a premium fishing zone once you’ve found the species of fish you want. You can also adjust the output power from 300 watts to 3,000 watts so that you can fine tune the GSD-26's performance depending on the depth of the water.
Easy to Connect
A powerful remote sounder that plugs directly into a Garmin Marine Network on the 4000, 5000, 6000, and 7000 series compatible network plotters, makes installation a snap. For the ultimate sonar experience, make the Garmin GSD-26 a part of your next fishing excursion. Please call us for Transducer Options, 1-800-477-2611.
- GSD 26 Black Box
- Power Cable
- Marine network cable (6 ft)
- Mounting hardware
- software update SD card
- Documentation
- Two-Year Warranty
- Size: 14.28"W x 10.79"H x 3.97"D
- Weight: 11.25 lbs
- Precise Shallow-Water-Like Target Separation For Depths Up To 10,000 Ft..
- Adjust Transmit Power From 300W to 3kW For More Control Over Sonar Returns.
- Spread Spectrum Technology Scanning Feeds More Information At One Time to Better Display Returns.
- Manually Adjust Frequencies For Targeting Specific Fish Species From 25kHz to 210kHz.
- Dual-Transceiver Design Allows For Simultaneous or Independent Transducer Operation.
Product Accessories for Garmin GSD 26 Digital Spread Spectrum Sounder

Airmar B175HW Thru-Hull CHIRP 20-Degree Transducer, Bare Wire
Airmar B175 1kW high-wide frequency CHIRP transducer, bare wire connection (adapter, wiring block required) Low profile, bronze thru-hull housing for vessels with deadrises of 16-24-degrees.

Airmar B175L Thru Hull CHIRP 20-Degree Transducer, for Airmar Mix and Match, or Bare Wire Connection
Airmar B175 1kW low frequency CHIRP transducer, Mix-and-Match End with no Mix-and-Match cable included. Can also be used for bare wire connection by cutting end and exposing wires. Low profile, bronze thru-hull housing for vessels with deadrises of 16-24 degrees.

Airmar M265C-LH Chirp In-Hull Transducer
The Airmar M265C-LH Chirp Transducer uses Broadband CeramicTechnology for crystal clear image detail and resolution. Increased resolution allows you to easily distinguish individual fish targets in the water column or close on the bottom. (Low and High Frequencies, Depth Only) No Connector, For Bare Wire Install.

Airmar R509CLH CHIRP Thru-Hull Transducer
The R509C-LH CHIRP Thru-Hull Transducer is designed for ultimate performance. The sheer size of the R509 gives you an idea of what size boat it is designed for, recommended for vessels 40' and up. Comes with high-performance fairing block.

Airmar B175H Thru Hull CHIRP 12-Degree Transducer, for Airmar Mix and Match, or Bare Wire Connection
Airmar Low Profile Bronze 12 degree tilt, High Frequency CHIRP transducer. Mix and Match Plug, No Mix and Match Cable Included. Ideal for Bare Wire Installation. Low profile, bronze thru-hull housing for vessels with deadrises of 8-15-degrees.

Airmar B175M Thru Hull CHIRP 12-Degree Transducer, for Airmar Mix and Match, or Bare Wire Connection
Airmar B175 1kW medium frequency CHIRP transducer, Mix-and-Match End with no Mix-and-Match cable included. Can also be used for bare wire connection by cutting end and exposing wires. Low profile, bronze thru-hull housing for vessels with deadrises of 8-15 degrees.

$899.95
Airmar B175M Thru Hull CHIRP 20-Degree Transducer, for Airmar Mix and Match, or Bare Wire Connection
Airmar Low Profile 20 degree tilt Medium Frequency CHIRP transducer. No Connector. Low profile, bronze thru-hull housing for vessels with deadrises of 16-24 degrees.
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