The rugged GPS smartwatch with a bright AMOLED display. Automotive . Products. The Garmin GSD 28 is a high-powered sonar module built for sport fishing that allows you to reach further depths with superior clarity. Built-in outputs from 300 watts up to 3kW as well as RapidReturn sonar technology allow anglers a faster deep water scrolling capability with 2 to 6 times faster rate than the previous GSD 26 model offered.
Performance Sonar Power GSD 28 can output 300 watts to 3 kW at extreme depths CHIRP Support The module supports dual-channel CHIRP (up to 3 kW per channel). Operation Range The GSD 28 sonar module can operate in the 25 to 250 kHz frequency range. Built to Last GSD 28 is rated for harsh marine environments and water resistance with an IPX7 rating.. GSD 28 can output 300 watts to 3 kW at extreme depths CHIRP Support . The module supports dual-channel CHIRP (up to 3 kW per channel). Operation Range . The GSD 28 sonar module can operate in the 25 to 250 kHz frequency range. Built to Last. GSD 28 is rated for harsh marine environments and water resistance with an IPX7 rating. In the Box: GSD.