GARMIN GT23M-TH Transom Mount Transducer
The GARMIN GT23M-TH is a stainless steel transom mount transducer designed for mid-band CHIRP and CHIRP DownVu applications, operating at frequencies of 260/455 kHz. It is installed on fishing boats and recreational vessels to enhance sonar imaging capabilities.
Compatibility & Applications
- Mounts to transoms of boats for enhanced sonar performance.
- Pairs with GARMIN echoMAP and GPSMAP series chartplotters.
- Replaces older GARMIN transducers without requiring additional modifications.
- Integrates with NMEA 2000 networks for data sharing.
- Fits vessels ranging from 18 to 30 feet for optimal sonar imaging.
- Utilizes CHIRP technology for improved target separation and clarity.
The unit provides advanced sonar capabilities for fishing and navigation, featuring enhanced imaging through CHIRP technology. It serves as a drop-in replacement for older GARMIN models, ensuring ease of installation on existing systems while delivering superior performance in underwater imaging.







