Furuno DFF1 FDF Digital Fish Finder


Furuno’s DFF1 is a network sounder featuring Furuno Digital Filter (FDF) Technology designed for use with the NavNet series.


This 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.


  • Works with NavNet, NavNet vx2 and NavNet 3D
  • Furuno Digital Filter (FDF) technology
  • Alarms (audio and visual) for water depth, Fish echoes and water temperature with optional sensors
  • 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

Furuno DFF1 FDF Digital Fish Finder Specifications

  • Frequency: 50/200 kHz
  • Transducer: 600 W or 1 kW (Optional Matching Box, MB-1100 may be required)
  • Range Scale: Max. 1,200 m
  • Waterproofing: IPX0
  • Power Supply: 12-24 VDC, 12 W 1.1-0.4 A
  • Size: 219 (H) x 255 (W) x 90 (D)
  • Weight: 1.2 kg

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About Furuno
Furuno was founded in Nagasaki, Japan in 1938 and has subsidiaries in the USA, Europe and China. Furuno Electric Co., Ltd. is a Japanese electronics company whose main products are marine electronics, including radar systems, fish finders and navigational instruments. The company also manufactures global positioning systems, medical equipment and meteorological monitoring and analysis systems.