Garmin GT21-TM

£ 179.99 £ 149.95

Out of Stock
This item is currently unavailable to purchase.

Want to be notified when this product is back in stock?

Perfect for coastal and offshore fishermen who want traditional sonar and CHIRP ClearVü scanning sonar. this transom 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 also includes a built-in fast response temperature sensor.

GT21-TM includes an 8-pin transducer with mounting hardware and installation instructions. Follow the instructions carefully to avoid damaging your boat.


  • Frequency: Traditional 50/200; ClearVü CHIRP 260 kHz (245-275 kHz) & 455 kHz (445-465 kHz)
  • Power: Traditional 600 W; ClearVü 500 W
  • Beamwidth: Traditional (40/10); ClearVü (2.0×51 @ 260 kHz) & (1.4×29 @ 455 kHz)
  • Maximum Depth: Traditional 1,500 ft.; ClearVü 1,000 ft.
  • Depth/Speed/Temperature: Depth and Temperature
  • Number of Pins: 8-pin
  • Cable Length: 30ft
  • Supported Deadrise/Transom Angles: 0°-70° degree transom
Part Number
Port Solent