Furuno TM150M Medium CHIRP Transom Mount Transducer with 10 Pin Connector [TM150M]TM150M Medium CHIRP Transom Mount Transducer As Chirp continues to redefine recreational fishing, AIRMAR has expanded the lineup of broadband transducers to satisfy the growing demand for this game changing technology. New to the market are the B150M and TM150M, economical Chirp transducers designed for offshore fishing and freshwater anglers. Operating at a frequency range of 95 155 kHz, these transducers reveal fish in shallow, murky waters at