300C
| The Fishfinder 300C colour sounder represents excellent value for recreational anglers who fish in coastal waters and freshwater lakes.
See Fish in Bright Colour
The 300C has a super-bright, high-resolution 3.5-inch QVGA colour display with an easy-to-use menu, plus UltraScrollT for detailed screen updates at fast speeds. This fishfinder comes with a Dual Beam transducer, which provides excellent coverage in shallow waters.
Benefit from High Performance Sonar |
FF400c

This new colour unit with a crisp, ultra-bright 100mm diagonal QVGA colour display and intuitive operating menu makes it simple to operate the multitude of great fish detecting features. The 400C is driven by a 500 watt RMS dual frequency dual beam sonar to depths of 4.5 km.
Garmin’s UltraScroll™ updates the screen at live-action speeds that can also be viewed in a true A-scope display for instantaneous sonar data.
Easy on the wallet but rich in function, the Fishfinder 400C has a new streamlined user interface enabling full control of features like Whiteline, Split Zoom display, bottom lock and adjustable depth line. “Big numbers” display lets you view several key data parameters at a glance with alarms for fish size, shallow water, deep water, low battery and drift, all configurable. Garmin’s plug-and-play CANet™ bus enables sonar data to be easily shared with compatible Garmin chartplotter displays.
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- Ultra-bright 100mm diagonal QVGA display, 320 x 240 pixels
- New streamlined user interface offers easy selection of functions and features.
- Power output: 500 watts (RMS) 4000 watts (peak to peak), dual frequency
- Depth: 1,500 feet (dual frequency)
- New night mode feature provides optimum viewing in low light conditions
- Backlit keypad for easier operation at night
- Unit dimensions: 145(W) x 127(H) x 69(D) mm
- UltraScroll™high rep rate sonar provides lightning-fast screen updates
- New AutoGain technology enhances target visibility
- Water temperature log graphically records water temp data
- Whiteline
- Adjustable depth line helps gauge desired fishing levels and bottom clearance
- Split zoom display offers a closer look at fish targets and bottom structure
- 2X, 4X and bottom lock zoom
- Odometer (optional water speed sensor required)
- Adjustable keel offset
- Alarms for fish size, shallow water, deep water and low battery
- Battery voltage indication
- NMEA 0183 sonar numeric data output
- Comes supplied with a protective cover
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FF90

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The Fishfinder 90 wraps simple operations and Garmin's exclusive fishfinder technology into an entry-level sonar. It's perfect for any vessel where space is at a premium. Dual-beam transducer operation gives you better shallow-water performance. The wide viewing angle (60°) lets you see fish even off the sides of the boat. With a basic black-on-white display, the Fishfinder 90 has one of the sharpest screens for the money.
The Fishfinder 90 also offers UltrascrollT which allows boaters to get a much faster refresh rate on their sonar display. AutoGain, as well as user adjustable gain, is also standard on all of Garmin's new fishfinders.
Features include:
- Black-and-white FSTN display, 2.2" W x 3.2" H, 4-inch diagonal, 64 x 128 pixels
- Patented transom/trolling mount transducer
- Dual-beam transducer with user-selectable narrow (14°) or wide (45°) view to see more fish in shallow water
- UltrascrollT high-rep-rate sonar
- Automatic display re-scaling on range change (no more vertical lines with range changes)
- New AutoGain technology to see more fish
- New sounder design featuring excellent shallow-water performance
- Incandescent backlight for display and keypad
- Power output: 100 watts (RMS) 800 watts (peak to peak)
- Depth: 600 foot
- Unit dimensions: 4.72" W x 4.94" H x 2.43" D
- See-Thru technology: shows weak and strong returns simultaneously
- Power down backup of settings: customer settings are not lost when the unit is turned off
- Whiteline
- 2X and 4X automatic and manual zoom
- Alarms for fish size, shallow water, deep water, low battery
- Battery voltage indication
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FF140

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When seeing your targets clearly is the goal, the Fishfinder 140 is the tool. With 240 vertical pixels on a four-level grayscale display, you get better separation and contrast. Like all of the new Garmin fishfinders, the 140 features UltrascrollT for fast screen updates, which is ideal for speed applications. The 140 has minimal buttons and intuitive operations. You don't even have to leave the sonar screen to change settings, thanks to a convenient adjustment bar. AutoGain, as well as user adjustable gain, is also standard on all of Garmin's new fishfinders.
Features include:
- 4-level gray scale FSTN
- Display, 3.3" H x 3.3" W, 4.7-inch diagonal, 240 x 128 pixels
- Patented transom/trolling mount transducer
- Dual-beam transducer with user-selectable narrow (14°) or wide (45°) view to see more fish in shallow water
- UltrascrollT high-rep-rate sonar
- Automatic display re-scaling on range change (no more vertical lines with range changes)
- New AutoGain technology to see more fish
- New sounder design featuring excellent shallow-water performance
- Incandescent backlight for display and keypad
- Power output: 100 watts (RMS) 800 watts (peak to peak)
- Depth: 600 foot
- Unit dimensions: 6.1" W x 4.9" H x 2.6" D
- See-Thru® technology: shows weak and strong returns simultaneously
- Power down backup of settings: customer settings are not lost when the unit is turned off
- Whiteline
- 2X and 4X Automatic and manual zoom
- Alarms for fish size, shallow water, deep water, and low battery
- Battery voltage indication
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GSD20

The GSD 20 is a remote, black-box sounder that transmits 500
watts at 50/200kHz. It's designed for use with the GPSMAP® 2006/2006C,
GPSMAP 2010/2010C, GPSMAP 182/182C and GPSMAP 232 to provide SONAR
capabilities to these units.
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The sounder module sends data serially in a Garmin® proprietary format to up to two units on board. When viewed on Garmin chartplotters, you'll see full-featured sounder displays in either split- or full-screen presentations. Features include auto-ranging, 2X and 4X auto and manual zoom, optional fish symbols and See-Thru® technology, which separates fish from thermoclines and structure.
Great for dual-helm boats, the GSD20 allows you to view and control sonar on one or two chartplotters. In addition the external mounting allows shorter transducer cable length on large boats.
Please Note: This product does not include a transducer. Garmin offers a complete selection of transducers to be purchased seperately as accessories.
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