Furuno DFF1 Black Box Echosounder
$450.00
Furuno DFF1 Black Box Echosounder adds dual-frequency 50/200 kHz sonar to compatible NavNet systems with selectable 600 W or 1 kW output and Furuno Digital Filter processing.
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Overview Furuno DFF1 Black Box Echosounder
Furuno DFF1 Black Box Echosounder is a network sonar module that adds dual-frequency fishfinding capability to compatible NavNet systems. It combines selectable 600 W or 1 kW output with Furuno Digital Filter processing to present cleaner sonar returns across the water column.
The black-box format is useful where helm space is tight or when sonar data needs to be shared around a networked bridge. It is intended for operators who want dedicated echosounder performance without replacing the main display.
Key Features
- Selectable 600 W / 1 kW output: Lets the installer match the sounder output to the transducer and operating depth.
- Dual 50 / 200 kHz sonar: Supports broad low-frequency depth reading and higher-frequency target detail.
- Furuno Digital Filter: Reduces unwanted noise and helps separate fish echoes from clutter.
- NavNet Ethernet integration: Shares sonar data across compatible network displays.
- Up to 2,500-foot range scale: Useful for general offshore fishing, bottom reading, and water-column monitoring.
Applications
Best suited to boaters and fishing crews using NavNet displays who want shared sonar data at the helm for bottom reading, fish location, and routine offshore or coastal fishing work.
Specifications
| Sonar Type | Digital network black-box echosounder |
| Output Power | 600 W or 1 kW selectable |
| Frequency | Dual 50 / 200 kHz |
| Technology | Furuno Digital Filter (FDF) |
| Max Range Scale | Up to 2,500 feet |
| Color Presentation | 8 / 16 / 64 colors |
| Interface | Ethernet (NavNet ecosystem) |
| Power Requirements | 12 – 24 VDC |
What’s Included
- Furuno DFF1 Black Box Echosounder Module
- Ethernet Network Cable (5 Meters)
- Power Cable Assembly
- Mounting Hardware Kit
- Spare Fuses and Installation Materials
- Comprehensive Installation and Operation Documentation
Frequently Asked Questions About Furuno DFF1 Black Box Echosounder
What is Furuno DFF1 Black Box Echosounder intended for?
Furuno DFF1 Black Box Echosounder adds dual-frequency 50/200 kHz sonar to compatible NavNet systems with selectable 600 W or 1 kW output and Furuno Digital Filter processing. It is described as dedicated sonar or fishfinding hardware that delivers its data through an existing monitor or multifunction display setup.
What sounder or fishfinding features are highlighted here?
The listed product details include selectable 600 W or 1 kW output and Furuno Digital Filter processing. Those details matter when the operator needs sonar performance matched more closely to target depth, seabed conditions, or fishing style.
How does this product work within a larger marine electronics system?
The supplied information mentions compatible NavNet systems, showing that this unit is meant to send sonar functions into a compatible display network instead of relying on a separate standalone screen at the helm.
What type of operation is this unit suited to?
It is well suited to offshore fishing use where better underwater detail, stronger system control, or a more organized helm layout can make searching, running, and monitoring easier through the day.

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