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Old 12 October 2008, 09:49   #1
rickuk3's Avatar
Country: UK - England
Town: Leighton Buzzard
Boat name: Phoenix
Make: Osprey Eagle
Length: 5m +
Engine: Suzuki 75hp
Join Date: Sep 2005
Posts: 270
GSD 20 black-box sounder

The GSD 20 is a remote, black-box sounder that transmits 500 watts at 50/200kHz. It’s designed to provide SONAR capabilities to the following units: GPSMAP® 172, GPSMAP 172C, GPSMAP 182/182C, GPSMAP 192, GPSMAP 232, GPSMAP 276C, GPSMAP 296, GPSMAP 376C, GPSMAP 396, GPSMAP 2006/2006C, GPSMAP 2010/2010C, GPSMAP 3005C, GPSMAP 3006C, GPSMAP 3010C and other units that accept data serially in Garmin proprietary format . 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.
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