Description:
The GSD 21 analog sounder adds detailed sonar data to your compatible Garmin
chartplotter.
Connect with CANet
This black-box sounder connects directly to your chartplotter with a serial
cable. To take advantage of UltraScroll, which provides lightning-fast refresh
rates, connect the GSD 21 to your chartplotter with CANet, Garmin's 1-megabit
proprietary network.
Get Great Shallow and Deep-Water Performance
The high-dynamic range sounder provides exceptional performance in water as
shallow as one foot to depths as great as 1,500 feet. The GSD 21 can connect to
dual-frequency transducer (50/200 kHz) for deep-water performance and 500 watts
of transmit power, or a dual-beamwidth transducer (narrow/wide) for operation in
shallow freshwater as well as deep water and a transmit power of 400 watts.
