Capitalizing on the digital-signal-processing technology it released in 2006, Furuno now introduces a black-box fish-finder module for its NavNet system. The DFF1 operates directly with NavNet 1 or vx2 or an Ethernet hub system and offers the same transducer and speed/temp sensor connections as the stand-alone (BBFF1) sounder (i.e., if you run the BBFF1, it is plug-and-play) . The DFF1 automatically adjusts gain, shallow water sensitivity and power output, suppresses echoes and clutter directly beneath the transducer and provides a clearer screen image and image separation. This increases your ability to determine whether you're seeing baitfish or big fish. It also adjusts gain to depth, providing the optimal search pulse.
The DFF1 features selectable frequencies (50 kHz or 200 kHz), 600 or 1,000 watts RMS transmission power, a dual mode (allows for simultaneous display of 50 and 200 kHz images) and a zoom mode for closer inspection of the water column. Other DFF1 features include real-time scanning (A-Scope), as well as fish, depth or temperature alarms and more. Transducers and speed/temp sensors available in thru-hull or transom mount. MSRP of the DFF1 black box is $800. Contact Furuno, 360-834-9300, www.furuno.com.