2025 Garmin Marine Garmin Traditional Garmin GT21-TH GT21-TH

Information

2025 Garmin Marine Garmin Traditional Garmin GT21-TH GT21-TH

Perfect for coastal and offshore fishermen who want traditional sonar and CHIRP ClearVü scanning sonar with a stainless steel stem, this thru-hull mount transducer consistently displays clear and crisp fish arches with superior target separation as well as clear definition of structure below the boat.

The CHIRP ClearVü element has a power rating of 500 W and operating frequencies of 260/455 kHz. The traditional sonar has a power rating of 600 W and operating frequencies of 50/200 kHz. It includes a built-in fast-response temperature sensor. For hull deadrises less than 25 degrees.

GT21-TH includes an 8-pin transducer with stainless steel stem, fairing block, isolation plate and bushings, mounting hardware and installation instructions. Follow the instructions carefully to avoid damaging your boat.

Photos

Highlights

  • Longville, Minnesota
  • 2025
  • Garmin Marine
  • Garmin Traditional Garmin GT21-TH GT21-TH
  • CHIRP: 40°/10° | ClearVü: 2.0°x51° @ 260 kHz and 1.4°x29° @ 455 kHz
  • Available

Specifications

  • 2025
  • Garmin Marine
  • Garmin Traditional
  • Garmin GT21-TH GT21-TH
  • Miscellaneous
  • Cable: 30 ft.
  • CHIRP: 40°/10° | ClearVü: 2.0°x51° @ 260 kHz and 1.4°x29° @ 455 kHz
  • Supported Deadrise/transom Angles: Up to 25° deadrise
  • 1,500 ft.; ClearVü: 1,000 ft.
  • Traditional 600 W; ClearVü 500 W
  • Frequency: Traditional 50/200; ClearVü CHIRP 260 kHz (245-275 kHz) & 455 kHz (445-465 kHz) | Number Of Pins:8-pin
  • Depth/speed/temperature: Depth and Temperature