Navico xSonic TM275LH-W TM CHIRP Transducer Wide Angle [000-13770-001]xSonic TM275LH W TM CHIRP Transducer Wide Angle The TM275LH W is a urethane, transom mounted CHIRP transducer, ideal for sportfishing and commercial vessels 8 m (25 ft) and up. This dual channel transducer combines Low CHIRP frequencies to accurately track the bottom in deep water, with High CHIRP at a constant 25x beam width for the best resolution and coverage in the upper water column and in shallower depths. Features: 42 65 kHz Low CHIRP with 25