Furuno DFF3-UHD High-Power TruEcho CHIRP Black Box Fishfinder f/NavNet TZouch3 & NavNet TZtouch2 TZT2BB

The Furuno DFF3-UHD is a high-power black-box fishfinder for deep-water operators using NavNet TZtouch systems. Its 2kW or 3kW output and TruEcho CHIRP processing are designed for deep-drop fishing, commercial work, and offshore boats that need more reach than a small sounder can provide. It does not include a display or transducer, so the complete system must be specified around the boat.

The FM range covers 25-242kHz across low, medium, and high bands, giving the installer broad frequency choices. The supplied depth capability reaches up to 15,000 feet, but that figure depends heavily on transducer selection, mounting, hull noise, and water conditions. Bottom Discrimination and ACCU-FISH work with a compatible transducer. Compatibility is listed for TZtouch 2 through TZT2BB, TZtouch 3, and TZtouch XL systems.

Key Features

- TruEcho CHIRP deep-water processing – Provides the sounder platform for serious offshore and deep-drop fishing.
- 2kW or 3kW output – Gives more power than standard 1kW sounder modules.
- 25-242kHz FM range – Provides low, medium, and high frequency flexibility.
- Up to 15,000 feet depth capability – Gives the listed maximum when matched with the right transducer.
- Bottom Discrimination and ACCU-FISH – Adds bottom and fish-analysis functions with compatible equipment.

Who Is This For?

This high-power Furuno fishfinder module suits commercial fishing vessels, deep-drop boats, charter operations, and large offshore sportfishers. It is not ideal for a small boat or a buyer seeking a complete fishfinder, because a NavNet display, transducer, network, and installation plan are all separate.

Compatibility

Confirmed compatibility includes NavNet TZtouch 2 through TZT2BB, TZtouch 3, and TZtouch XL systems, plus compatible Furuno transducers. The supplied information does not identify specific transducer models, NMEA 2000, NMEA 0183, radar, autopilot, Garmin, Raymarine, or Lowrance compatibility. No named incompatible system was provided; verify the display and deep-water transducer requirements before installation.

Technical Specifications

- Brand: Furuno
- Model: DFF3-UHD, 000-037-145
- Device type: High-power TruEcho CHIRP black-box fishfinder
- Output: 2kW or 3kW
- Frequency: FM 25-242kHz
- Depth: Up to 15,000 feet, transducer dependent
- Features: Bottom Discrimination and ACCU-FISH with compatible transducer
- Compatibility: NavNet TZtouch 2 TZT2BB, TZtouch 3, TZtouch XL
- Display: External NavNet display required
- Warranty: 2-year standard warranty

Warranty & Support

Furuno provides a 2-year standard warranty. The supplied specifications do not state warranty exclusions or service procedures.

The DFF3-UHD is the deep-water choice over the DFF1-UHD+, offering 2kW or 3kW output and a wider FM range for demanding offshore work. The trade-off is installation complexity and price: the result depends on the transducer, hull installation, and NavNet display. Choose it when deep-water performance matters more than a compact sounder package.