The Garmin GT20-TM is a transom-mount CHIRP DownVü transducer with a 500W power rating. It operates in the 455 kHz and 800 kHz bands.

This model also acts as a conventional 500W non-CHIRP transducer at 77 kHz and 200 kHz.


Specifications

Feature Specification
Part Number 010-01960-01
DownVü CHIRP Frequency Bands 435-475 kHz; 800-840 kHz
Non-CHIRP Frequencies 77/200 kHz
Power Rating 500W RMS CHIRP; 500W RMS non-CHIRP
Housing Transom mount, for transom angles from 0-70°
Beam Width 2.5°x53° @ 455kHz; 1.6°x29° @ 800kHz
Temperature Sensor Integrated into transducer
Transducer Cable 20 ft with Garmin blue 8-Pin connector
Hole Size Holes needed for bolts, transducer cable
Weight 360g (0.79 lb)
Overall Height 52mm (2.0")
Overall Length 150mm (5.9")
Hull Material Any