Garmin GPSMAP 178 Ext Ant Single-Trans

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Questions and Answers (Q&As)

What's Included In The Box?

• GPSMAP 178 Sounder
• Garmin Dual Beam Transducer Depth Temp Plastic 200 (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)
• Users Manual
• Quick Start Guide

Product Information

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Customer Reviews

Family Series

Alternative Models

Manufacturer Description

The GPSMAP 178 has everything you need in one space-saving package - GPS navigation, marine chartplotting, and powerful sonar. This combination chartplotter/sounder includes the same user-friendly interface as its color counterpart, the GPSMAP 178C, but sports a high-resolution monochrome display and a price that's within any mariner's budget.

The GPSMAP 178 packs a built-in worldwide marine basemap, state-of-the art processor with lightening-fast map redraw, and crisp, sunlight readable, 10-level grayscale display into a waterproof, space-saving console - perfect for large crafts and small runabouts alike. Boaters will love its convenient, intuitive design including:
- simple keypad with backlighting for easy operation
- one knob, adjustable tilt and swivel mount so you can quickly pop it in and out
- front loading data cards for easy access

Users can enhance basemap detail on the GPSMAP 178 by simply plugging in data cards preprogrammed with BlueChart or Fishing Hot Spots detail or downloading data from optional MapSource CDs to an optional Garmin data card. BlueChart provides exceptional offshore marine coverage that includes shaded depth contours, navaids, shoreline, and more. For inland boating and fishing, the U.S. Recreational Lakes with Fishing Hot Spots CD & preprogrammed data cards are packed with inland lake maps, profiles, marinas, fishing areas and useful outdoor resources.

The GPSMAP 178 with external antenna is available in three different packages. Either without a transducer so you can add your own, with a single-frequency transducer or dual-frequency transducer making it the perfect companion for offshore or inland lake fishing. Boaters can choose dedicated full-screen map, full-screen sonar, split-screen map/sonar, compass, and navigational screens - with customizable digital data fields for each page.

Features and Tips

GPSMAP 178 Ext Ant Single-Trans features

• Includes an External GA29 Antenna and Single Frequency Transducer
• 320 x 320-pixel, high-resolution, 10-level gray-scale FSTN LCD screen with adjustable CCFL backlight
• 3.2" W x 3.2" H (4.5" diagonal) viewing area
• 6.3" x 4.9" x 2.8 " (W x H x D) unit dimensions
• State-of-the-art 200 MHz processor makes map redraw, panning, and zooming virtually instantaneous
• Accepts Garmin data cards for up to 128 MB of map storage
• WAAS-enabled for accuracy to within 3 meters
• 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
• 3000 user waypoints are automatically tagged with the date and time of creation, as well as water temperature and depth -vital information for serious anglers
• Stores 50 reversible routes with up to 50 waypoints each, plus MOB and TracBack modes
• 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
• 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
• Water temperature and fish ID with depth alarms
• Waterproof: IEC 60529 IPX7 standards (submersible in one meter of water for up to 30 mins.)
• Accepts Garmin Memory Data Cards and Pre-Programmed BlueChart Data Cards

Specifications