Rely on Airmar\'s new broadband transducers for the ultimate fishing mission! Whether you\'re a commercial fisherman charter captain or tournament angler there\'s a new game in town. Traditional marine fish finders operate at discreet frequencies such as 50 kHz and 200 kHz use relatively short-duration pulses and use narrowband sonar transducers. In contrast Chirp uses a precise sweep pattern of many frequencies within a long-duration transmit pulse from a broadband transducer so the equivalent sound energy transmitted into the water is 10 to 1 000 times greater than a conventional marine fish finder.