B175M Bronze 1kW CHIRP 20degrees Tilt. Rely on Airmar’ s broadband transducers for your ultimate fishing mission. Whether you’ re a commercial fisherman, charter captain, or tournament angler, there’ s a new game in town! Chirp transducers enable bottom detection down to 3,000m (10,000′ ) with 5 to 10 times greater detail and resolution so precise it’ s possible to distinguish between individual baitfish, game fish, and underwater structures. One transducer delivers up to 80 kHz of total bandwidth in just one installation, saving customers time and money.. A tilted element model in the Chirp Thru-Hull product line, the B175M CHIRP across the following bandwidth:. Medium Frequency 85-135 kHz.