Garmin GPSMAP 178C Ext Ant Dual-Trans

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Questions and Answers (Q&As)

What's Included In The Box?

• GPSMAP 178C Sounder
• Garmin Dual Freq Transducer Depth Temp Plastic Kit (View this item)
• Garmin External GA29 Antenna (View this item)
• Garmin GPSMAP 178 Power and Data Cable (View this item)
• Garmin GPSMAP 172 and 178C Swivel Mount (View this item)
• Unit Cover
• Users Manual
• Quick Start Guide

Product Information

Gallery of Customer Images

Customer Reviews

Family Series

Alternative Models

Manufacturer Description

The GPSMAP 178C Sounder is a new-generation fully integrated chartplotter and powerful sonar, offering the same brilliant sunlight-readable color LCD, powerful features, and simple interface as the GPSMAP 172C-all in a compact, value-priced console that leaves fish nowhere to hide.

It comes standard with a built-in worldwide marine basemap and accepts MapSource BlueChart offshore marine cartography-featuring detailed depth contours, inter-tidal zones, wrecks, navaids, and many other points of interest.

For small-water anglers, the GPSMAP 178C Sounder is compatible with MapSource Recreational Lakes with Fishing Hot Spots-featuring fishing areas, boat ramps, marinas, and hazards for hundreds of popular U.S. and Canadian lakes. Pre-programmed data cards can be easily inserted into the slot on the front of the unit.

Features and Tips

GPSMAP 178C Ext Ant Dual-Trans features

• Includes an External GA29 Antenna and Dual Frequency Transducer
• 320 x 320-pixel, 256-color CSTN screen with adjustable CCFL backlight
• 3.2" W x 3.2" H (4.5" diagonal) viewing area
• 6.3" x 4.9" x 3.7" (W x H x D) unit dimensions
• State-of-the-art 200 MHz processor makes data acquisition, panning, and zooming virtually instantaneous
• Choose either a dual-frequency 50/200 kHz transducer for offshore boating or a single-frequency 200 kHz transducer for inland lakes and bays
• See-Thru technology (which separates fish from thermoclines and structure) and Depth Control Gain (DCG) for detailed images of structure and bottom densities
• New digital display technology offers an easy-to-read, semi-transparent digital readout that allows users to see sonar images "behind" the data
• User waypoints are automatically tagged with the date and time of creation, as well as water temperature and depth-vital information for serious anglers
• 10,000 active track points and 700 saved track points; database information can be stored on removable data cards and transferred to a PC or another unit
• Sends, receives, and displays positioning data with DSC equipped VHF radios
• TracBack mode helps guide you back to points along a route
• Tracklines can be color-coded for trolling or cruising applications
• 500-watt (RMS) 4000-watt (PTP) output with dual-frequency transducer
• 400-watt (RMS) 3200-watt (PTP) output with single-frequency transducer
• Adjustable range, gain, zoom, and bottom lock
• Temperature log maintains a graphical record of temperature data
• Shallow-water, deep-water, fish-by-size, timer, low-battery-voltage, anchor-drag, arrival, off-course, proximity-waypoint, and clock alarms
• Water temperature and fish ID with depth alarms
• Accepts Garmin Memory Data Cards and Pre-Programmed BlueChart Data Cards

Specifications