GARMIN GT23M-TM Transom Mount Transducer
The GARMIN GT23M-TM is an 8-pin transducer with mid-band CHIRP traditional sonar rated at 600 W over 80-160 kHz. It provides CHIRP traditional sonar and CHIRP DownVü scanning sonar for installers rigging freshwater, coastal, and offshore fishing boats.
Technical Specifications
| Traditional sonar | Mid-band CHIRP, 80-160 kHz, 600 W |
|---|---|
| DownVü sonar | CHIRP DownVü, 260/455 kHz, 500 W |
| Connector | 8-pin |
| Housing material | Plastic |
| Weight | 3 lbs (1.36 kg) |
| Dimensions | 9 x 2.46 x 1.08 in (228.6 x 62.5 x 27.4 mm) |
Compatibility & Applications
- Fits freshwater fishing use with CHIRP traditional and CHIRP ClearVü scanning sonar.
- Fits coastal and offshore fishing use with CHIRP traditional and DownVü scanning sonar.
- Mounts as a transom-mount transducer for fishing-boat sonar installations.
- Pairs mid-band CHIRP traditional sonar with CHIRP DownVü scanning sonar.
- Wires through an 8-pin transducer connection.
For a fishing-boat refit, the installer can select the unit for a transom-mount transducer position and an 8-pin connection. Its differentiator is the paired 600 W traditional CHIRP element and 500 W DownVü element in one plastic transducer.







