Garmin GSD 20 Remote Sounder (3000, 2000, 182, 232) DISCONTINUED

Details

The Garmin GSD 20 has been discontinued. It is replaced by the Garmin GSD 21, which is is the same price and is compatible with the same units. Click here for details.

NOTE: The Garmin GSD 20 Remote Sounder requires use of a transducer to receive sonar frequencies. Please select a transducer from the Accessories section on the right-hand side of this page.

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. 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.

Screens from GPSMAP 2010C equipped with a GSD 20 :

GSD 20 — "Split Screen" GPSMAP 2010C

See-Thru® technology allows you to see fish, even in thermoclines.

View bottom information and navigation data at the same time.

Bottom lock is great for finding fish or structure on the bottom because it maintains a constant, detailed view of the critical area.

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