Furuno's DFF1 is a new network sounder featuring Furuno Digital Filter (FDF) Technology designed for use with NavNet and NavNet vx2. This new digital Network Sounder can turn any NavNet display into a powerful, dual-frequency digital fish finder. The compact network sounder unit connects directly to a NavNet display or an Ethernet hub with a single Ethernet cable. If it is connected to an Ethernet hub that has multiple displays attached, each of those displays will have access to the Network Sounder.
The sounder itself has a selectable 600W or 1kW output power. You may choose LF (50kHz), HF (200kHz) or both at the touch of a key and obtain detailed echoes of bottom structure and fish using range scales of up to 5,000 ft. And because the Network Sounder is used on a NavNet display, you will also be able to use its Radar and Chart Plotter features depending on which unit you have.

Standard Features:
Works with NavNet and NavNet vx2
Dual-Frequency 50/200 kHz
New DSP (Digital Signal Processing) Filter makes the picture clearer and easier to discriminate between baitfish and larger target species
DSP technology helps adjust gain and output power as well as suppresses main bang (echoes just below transducer)
8/16/64 Color Echo Presentations
8 Range Scales to 2,500 feet
Selectable output power of 600W or 1kW
Audio and visual alarms for water depth, fish echoes and water temperature*
Wide variety of transducer options
Selectable automatic cruising or fishing modes to suit your style of boating
Automatic function for detecting fish and bottom in both shallow and deep water
White line feature helps discriminate fish lying near the bottom
*Requires approriate sensors