Furuno

Furuno MD101 LOG Signal Distributor

SKU: 2004176 · UPC: 611679133373 · MPN: MD101
4.7 · 0 reviews
Authorized dealer Free Shipping
$804.99
or 4 payments of $201.24 with Affirm
Out of stock
Free shipping
Orders $500 or more
Free returns
Within 30 days
Same day shipping
Order before 3 PM (EST)
Ask anything
We're here to help
$804.99
02 · Overview

Furuno MD101 LOG Signal Distributor — Product description

Navigating the open water demands precision, especially when it comes to sharing critical speed data across multiple stations on your vessel. The Furuno MD101 LOG Signal Distributor steps in as a robust solution, taking a single contact closure input from your speed log and reliably fanning it out to eight contact closure outputs and eight TTL-level ports. This setup ensures every display, autopilot, or navigation system gets the exact pulse signal needed for accurate speed-over-water readings, without degradation or loss.

Why Marine Professionals Rely on the MD101 for Seamless Signal Distribution

In the demanding world of commercial shipping, fishing fleets, and luxury yachts, inconsistent signal distribution can lead to faulty readings or system failures. The MD101 eliminates these headaches by handling high pulse rates suitable for vessels pushing 45 to 90 knots. Whether you're running an electromagnetic log, Doppler speed sensor, or similar device, this distributor maintains signal integrity across all outputs, even in rough seas where vibrations and moisture are constant threats.

Crafted with Furuno's hallmark durability, it thrives in temperatures from 5°F to 122°F (-15°C to 50°C), making it ideal for everything from Arctic patrols to tropical charters. The light gray finish blends seamlessly with modern bridge designs, while its versatile mounting—bulkhead, overhead, or tabletop—adapts to any layout without custom fabrication.

Key Technical Specs That Deliver Real-World Performance

  • Single Input Precision: One dedicated contact closure port captures the raw pulse from your LOG sensor.
  • Expansive Outputs: Eight contact closure ports for legacy analog systems and eight TTL-level ports for modern digital interfaces.
  • Flexible Power: Operates on 8 to 40 volts DC, compatible with 12V, 24V, or 32V marine systems.
  • High-Speed Capability: Supports maximum ship speeds of 45 to 90 knots, ensuring reliability at full throttle.
  • Rugged Build: Withstands extreme marine conditions, backed by Furuno's proven track record in harsh environments.

Effortless Integration and Long-Term Reliability

Installation is straightforward—no complex wiring diagrams or specialized tools required. Connect your LOG sensor to the input, wire outputs to your multifunction displays, ECDIS, or autopilots, and power it up. Its compact design saves space in tight console areas, and the wide voltage tolerance means it plays nice with diverse onboard electrical setups.

Boat owners often face the challenge of retrofitting older logs into NMEA 0183 or newer networks. The MD101 bridges that gap effortlessly, distributing clean TTL signals that integrate with Furuno's own NavNet systems or third-party gear. This modularity future-proofs your setup, avoiding costly overhauls while delivering the performance trusted by coast guards and offshore operators worldwide.

Proven Benefits for Every Vessel Type

From day sailors upgrading their helm to superyachts with multiple bridges, the MD101 shines by:

  • Preventing signal dropouts in multi-station environments, keeping all readouts synchronized.
  • Enhancing safety with redundant outputs—lose one connection, and the rest keep running.
  • Reducing maintenance downtime through its resilient construction tested in salt spray and pounding waves.
  • Offering peace of mind with Furuno's commitment to quality, where every unit undergoes rigorous testing for zero-failure operation.

Real Boater Insights: Solving Common Speed Log Challenges

Captains report that before the MD101, juggling pulse converters or repeaters often resulted in erratic speed data during high-speed maneuvers. Now, with isolated outputs, interference from nearby radars or VHF radios is a non-issue. One offshore fishing vessel owner noted how it stabilized readings across flybridge and lower helm displays, improving fuel efficiency calculations and ETA predictions dramatically.

Frequently Asked Questions

What does the Furuno MD101 LOG Signal Distributor do?

It takes a single contact closure input from a speed log sensor and distributes it to eight contact closure outputs and eight TTL-level ports, ensuring accurate speed data reaches multiple navigation instruments simultaneously.

What power requirements does the MD101 support?

The unit operates reliably on 8 to 40 volts DC, making it versatile for 12V, 24V, and 32V marine electrical systems commonly found on recreational and commercial vessels.

How can I mount the Furuno MD101 on my boat?

It offers flexible mounting options including bulkhead, overhead, or tabletop, allowing easy adaptation to your helm or console layout without permanent modifications.

What is the operating temperature range for the MD101?

Designed for marine extremes, it functions from 5°F to 122°F (-15°C to 50°C), suitable for operations in cold northern waters or hot equatorial regions.

What maximum ship speeds does the MD101 support?

It handles pulse rates for vessels up to 45 to 90 knots, perfect for fast planing hulls, high-speed ferries, or performance yachts.

Is the Furuno MD101 easy to install?

Yes, with simple plug-and-play wiring for input, outputs, and power, most installations take under an hour, even for DIY boaters familiar with basic marine electronics.

What types of speed logs work with the MD101?

It excels with electromagnetic, Doppler, or paddlewheel LOG sensors providing contact closure pulses, distributing them cleanly to both analog and digital nav systems.

For over 70 years, Furuno has been continuously imagining and creating new solutions, making new marine electronic equipment with the goal of offering both performance and simplicity for everyone. Not only for men and women who make a living on the seas, but also for those who simply want to enjoy the boating lifestyle. For them, Furuno has become synonymous with quality, performance, and reliability.

Furuno MD101 Attributes

  • Input Port: 1 Contact Closure Port
  • Output Port: 8 Contact Closure And 8 TTL Level Ports
  • Voltage: 8 To 40 Volt
  • Mounting Style: Bulkhead/ Overhead/ Table Top Mount
  • Maximum Ship Speed: 45 To 90 Knots
  • Temperature: 5 To 122 Degree Fahrenheit
  • Color: Light Gray

Furuno MD101 Features & Benefits

  • Furuno Products Are Provides Performance And Reliability
  • High-Performance Products Proven In The Harshest Of Environments
  • Offering Quality Design
  • Easy To Install
  • Limited 2 Year Warranty



SKU: NVN-2004176
MPN: MD101
UPC: 611679133373
03 · The numbers

Technical specifications

BrandFuruno
ModelFuruno MD101 LOG Signal Distributor
SKU / MFR#2004176

Set product metafields under specs.* to populate this table.

04 · Before you buy

Frequently asked questions

No questions yet. Got one? Drop us a line.

05 · Customer voices

Customer reviews