Airmar B117 Traditional/CW ThruHull 50/200kHz, 600W, Transducer, 9-Pin, DT f/Simrad, Lowrance BG [B117-DT-9N]B117 Traditional CW Thru Hull 50 200kHz, 600W, Transducer, 9 Pin, DT for Simrad, Lowrance & B & G The B117 features a 50 200 kHz, dual frequency, single, ceramic element in a low profile bronze housing. The nearly flush design minimizes drag with only 5 mm (3 16") extending outside of the hull. Features: Depth only or depth and temperature 600 W Dual frequency element: 50 kHz with a wide 45 beamwidth for performance to 353 m (1,200'), 200 kHz with a