AIRMAR P79 200kHz 31-234-1-11 In-Hull Transducer f/ Garmin Geonav Simrad FurunoAIRMAR P79 200kHz 31 234 1 11 In Hull Transducer f Garmin Geonav Simrad Furuno 50 and 200kHz model. Works perfectly, fully tested with guarantee. You will receive what you can see in the photos. TRANSDUCER P79 The P79 in hull transducer easily adjusts to hull deadrise angles up to 22. This ensures that the beam is vertically oriented to receive echos resulting in accurate depth readings. Unlike traditional "puck" type transducers, our P79 consists of