Raymarine Bronze 1kW CHIRP 20 Tilt B175M. Whether youre a commercial fisherman charter captain or tournament angler theres a new game in town Chirp transducers enable bottom detection down to 3000m (10000) with 5 to 10 times greater detail and resolution so precise its 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 Specifications for Raymarine B175M Bronze 1kW CHIRP 20 Tilt: Manufacturer: Raymarine Color: Black Package Contents: Raymarine B175M Bronze 1kW CHIRP 20 Tilt Raymarine A80049: Bronze 1kW CHIRP 20 Tilt B175M