GARMIN Black Box Sonar GSD™ 25 Premium Sonar Module

Premium remote network sonar solution.

The GSD 25 Premium Sonar Module is a remote network solution that provides outstanding fishfinding and bottom tracking capabilities.

Clearest scanning sonar images on the water: Adding CHIRP technology to ClearVü and SideVü scanning sonar further enhances the resolution, target separation and clarity of the sonar images of fish and structure that pass below and to the sides of your boat. The images sent to your compatible Garmin chartplotter have target details so clear and precise, you can actually distinguish between small and closely spaced fish at key fishing depths all the way down to 5,000 feet.

True dual-channel 1kW CHIRP:  CHIRP is the most sophisticated sonar technology available for use by the fishing and boating public. CHIRP is an acronym for Compressed High-Intensity Radiated Pulse. What it means to you is much better target resolution, clarity and crispness than any other sonar system. Having Garmin’s true dual 1kW CHIRP as your traditional sonar allows you to adjust CHIRP frequencies to low/medium, low/high, medium/high to further optimize your sonar performance.

This sonar is so unique that Garmin has developed their own proprietary transducers that are specially designed to work with this new sonar to provide the very best performance. Transducer sold separately.

Specifications

• Frequency: Traditional: 50/200, 77/200, 83/200kHz, Single/Dual Channel CHIRP: 40-250kHz, SideVü/DownVü: CHIRP 455/800kHz and CHIRP 260/455kHz
• Transmit Power: 1kW
• Maximum Depth: 5,000′
• Dimensions: 9 7/8″W x 7 5/8″L x 2 5/8″D
• Data Interface: Ethernet
• Transducer: Sold separately
• Waterproof Rating: IPX7
• Warranty: Two years

What’s in the Box

• GSD 25
• Right-angle power cable (6′)
• Right-angle network cable (6′)
• Mounting hardware
• Documentation

Transducer Options

This product operates best with these select transducers, sold separately. Depending on the style of the transducer, you’ll get depth, speed and/or temperature readings. To complete your installation, order one of the following transducers:

 

Transducer Type: CHIRP All-In-One	Reading(s)	Transmit Power	Max. Depth	Material	Model
GT50M-TM CHIRP/ClearVü/SideVu Transom Mount (12 pin)(Primary)	Depth/Temp	500W CHIRP 300W CV/SV	1,500′ Traditional 750′ ClearVu; 500′ SideVu	Plastic/Stainless Steel	17596388
GT50M-TH CHIRP/ClearVü/SideVü Thru-Hull (12 pin) (Primary)	Depth/Temp	300W CHIRP 500W CV/SV	1,500′ Traditional 750′ ClearVu; 500′ SideVu	Plastic/Stainless Steel	17596396
GT50M-THP CHIRP/ClearVü/SideVü Thru-Hull (12 pin)(Primary)	Depth/Temp	300W CHIRP 500W CV/SV	1,500′ Traditional 750′ ClearVu; 500′ SideVu	Plastic/Stainless Steel	17596404
GT51M-TH CHIRP/ClearVü/SideVüThru-Hull (12 pin)(Primary)	Depth/Temp	600W CHIRP 500W CV/SV	1000′ ClearVu; 750′ SideVu	Plastic/Stainless Steel	17596420
GT51M-TM CHIRP/ClearVü/SideVu Transom Mount (12 pin)(Primary)	Depth/Temp	600W CHIRP 500W CV/SV	1000′ ClearVu; 750′ SideVu	Plastic/Stainless Steel	17596412
GT51M-THP CHIRP/ClearVu/SideVu Thru-Hull (12 pin)(Primary)	Depth/Temp	600W CHIRP 500W CV/SV	1000′ ClearVu; 750′ SideVu	Plastic/Stainless Steel	17596438
GT40-TM Traditional/ClearVU/SideVu Transom Mount (12 pin)	Depth/Temp	500W Traditional 500W CV/SV	1,900′ Traditional (900′ Saltwater) 750′ ClearVu; 500′ SideVu	Plastic/Stainless Steel	17596347
GT41-TM Traditional/ClearVU/SideVu Transom Mount (12 pin)	Depth/Temp	600W Traditional 500W CV/SV	1,500′ Traditional 1000′ ClearVu; 750′ SideVu	Plastic/Stainless Steel	17596354
GT41-TH Traditional/ClearVu/SidVu Thru-Hull (12 pin)	Depth/Temp	600W Traditional 500W CV/SV	1,500′ Traditional 1000′ ClearVu; 750′ SideVu	Plastic/Stainless Steel	17596362
GT41-THP Traditional/ClearVu/SidVu Thru-Hull Pair (12 pin)	Depth/Temp	600W Traditional 500 W CV/SV	1,500′ Traditional 1000′ ClearVu; 750′ SideVu	Plastic/Stainless Steel	17596370

Transducer Type: CHIRP	Reading(s)	Transmit Power	Max. Depth	Material	Model
GT20-TM Traditional/ClearVu Transom Mount (4 pin)	Depth/Temp/Speed	500W	1,900′ Traditional 750′ ClearVu	Plastic	17596289
GT20-TM Traditional/ClearVu Transom Mount (8 pin)	Depth/Temp	500W	1,900′ Traditional 750′ ClearVu	Plastic	17492372
GT21-TM Traditional/ClearVu Transom Mount (8 pin)	Depth/Temp	600W Traditional 500W ClearVu	1,500′ Traditional 1,000′ ClearVu	Plastic	17596297
GT21-TH Traditional/ClearVu Thru-Hull (8 pin)	Depth/Temp	600W Traditional 500W ClearVu	1,500′ Traditional 1,000′ ClearVu	Plastic/Stainless Steel	17596305