

The Garmin GT51M-THP is a pair of GT51M-TH transducers with an interconnect cable.
Each GT51M-TH is a thru-hull combined DownVü and SideVü CHIRP transducer with a 500W power rating. They operate in the 260 kHz and 455 kHz bands.
These models also act as a standard CHIRP transducer in the Medium band (80-160kHz).
A fairing is supplied and this can be cut to match the hull contours and deadrise to ensure the beam faces downwards. One unit is installed each side of the centerline.
| Feature | Specification |
|---|---|
| Part Number | 010-01966-11 |
| DownVü and SideVü CHIRP Frequency Bands | 245-275 kHz; 435-475 kHz |
| Standard CHIRP Frequencies | Medium band 80-160kHz |
| Power Rating | 500W RMS DownVü CHIRP; 600W standard CHIRP |
| Housing | Thru-hull with adjustable external fairing |
| Beam Width | 2.0°x51° @ 260kHz; 1.4°x29° @ 455kHz; 24-13° @ 80-160kHz |
| Temperature Sensor | Integrated into transducer |
| Transducer Cable | 5 ft interconnect cable; 30 ft with Garmin orange 12-Pin connector |
| Hole Size | Holes needed for transducer stem, alignment bolts |
| Weight | 3.93kg (8.67lb) combined |
| Overall Height | 116mm (4.6") each |
| Overall Length | 323mm (12.7") each |
| Hull Material | Any |