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998c SI Images and Specifications



Humminbird 998c SI Combo
Humminbird 998c SI Combo NVB*
HD Side Imaging Ultra Wide Screen GPS Fishing System

2010 New! Features:
• SwitchFire™ Sonar allows two ways to view returns - Clear or Max mode.
• Three new color palettes for more viewing options
• Built-In Contour XD™ Cartography from Navionics® with 3,000 U.S. lakes
• LakeMaster® compatible with exclusive features
• Waypoint Management allows more control of your saved data.

Key Features:
• Brilliant, 8" sunlight viewable color display with 480V x 800H resolution
• Revolutionary 455/800kHz Side Imaging sonar technology and dual frequency 83/200kHz sonar
• 8000 Watts Peak-to-Peak, 1000 Watts RMS maxiumum power output, 1500 ft 2D depth and 150 ft SI depth
• External 50 channel WAAS GPS receiver included
• Triple channel sonar transmitter/receiver delivers fast, smooth operation
• Sonar/chart recording to SD card and on-screen playback
• Full screen chartplotter, 3D bird's eye view chartplotter and split screen sonar/chart with adjustable split
• Programmable view presets access favorite screens with one touch
• In-dash or Gimbal mount
• Water surface temperature included in transducer, GPS speed Included
*NVB model features Navionics continental US inland & marine charts built into rugged, shock resistance internal memory with updatable capabilities.

Display:480V x 800H, 8” Diagonal, 65,000 Color TFTTransducer Standard:Side Imaging/DualBeam PLUSTransducer Coverage(s):83kHz: 60° , 200kHz: 20° , 455kHz: (2) 86°, or 800kHz: (2) 72° @ -10db; 180º Total CoveragecerOperating Frequency(s):50, 83, 200, & 455 or 800 kHzPower Output:500W RMS (4000W PtP) w/ Standard Transducer; 1000W RMS (8000W PtP) w/ Opt 50kHz 1kW TransducerDepth Capability:Side Imaging:150’ Down; 240’ each side; DualBeamPlus: 1500’ w/ Standard Transducer; *3000 ft w/ Optional 50kHz TransducerTarget Separation:2 1/2 inchesTemperature:Included in TransducerSpeed:GPS Speed IncludedPower Input:10-20 VDCUnit Mounting:Gimbal or In-DashUnit Size Installed (Gimbal):11 1/4" W x 63/4" H x 4 1/4"DUnit Size Installed (In-dash):10 ¾” W x 6” H x 1 3/8” D; Required Minimum 3” behind dash clearanceTransducer Mounting:Transom Standard; Optional trolling motor or thru hulls availableGPS Receiver:External 50 Channel WAAS/EGNOSWaypoints, Routes, Tracks/Points:3000, 50, 50/ 20,000Cartography:Contour XD™ Built-in, Optional: LakeMaster® & Navionics®Communication:NMEA 0183 Input/OutputOptional System Modules:InterLink, CannonLink, WeatherSense, and AS WX 1 Satellite Weather Receiver
Humminbird 998c SI Combo Additional Features:
• SwitchFire™ Max Mode shows every sonar return from fish to zooplankton; Clear Mode reduces noise to show only structure & fish
• Fresh and saltwater set up options for optimal performance in any environment
• Accelerated Real Time Sonar™ operates at up to 40 times per second to instantly capture the action under the boat
• X-press™ menus place most important setting at your fingertips
• Freeze Frame pauses the sonar scroll for detailed inspection of the screen
• Instant Image Update immediately shows the results of setting changes for the most accurate fine tuning
• Sonar Echo Enhancement™ technology is so sensitive it’ll track a 1/2 oz. jig to over 40ft and separate targets within 2 ½ inches
• Man Overboard Function quickly adjust the boat track back to a specific spot with the touch of a button
• Fully gasketed waterproof design
• Large Digital Data displayed on every sonar or GPS screen
• Backlight for night viewing
• TripLog with distance, elapsed time, and average speed
• Totally automatic operation or totally manual operation with upper and lower range control
• Temperature graph overlay and audible temperature alarm along with One-touch Zoom with 2x, 4x, 6x, and 8x zoom levels
• Adjustable chart speed and feature memory retains your settings
• Water surface temperature included in transducer, speed paddlewheel included
• Optional 200/50kHz transducer available for deep water applications and depths to 3000 feet


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