Garmin gWind Race Transducer - Masthead Only Boat Optimist 8 MHz Impedance: (Ohms): 50

8 MHz Impedance: (Ohms): 50 Gain: 6 dB Max Input (Watts): 50 DC Ground: NO - the antenna will read "open circuit" when checked with an ohm meter or continuity tester

the CPU will calculate a dead reckoned position of the MOB

Includes built-in temperature

Bronze Low Profile Thru-Hull Low-Frequency CHIRP Transducer - 300W & 40 - 75kHz

Garmin gWind Race Transducer - Masthead Only Boat Optimist 8 MHz Impedance: (Ohms): 50gWind Race Transducer Masthead Only Designed for racing sailboats, the gWind Race features a 3. 3 feet (1 meter) straight pole to raise the transducer above the mast to remove turbulence errors. It features twin fin technology with 3 bladed propeller for more accurate TWS in lighter air while the twin fin design gives a more stable TWA. The 3 bladed propeller, unlike a cups design, is always efficient. This configuration includes only the gWind series