The Furuno 520PLD and 520BLD are low-profile thru-hull transducers designed for efficient underwater signal reception and depth measurement. The 520PLD features a plastic housing styled after the Airmar P319, while the 520BLD is constructed with durable bronze. Both models operate at 600 watts with dual-frequency operation of 50/200 kHz and beam angles offering wide and narrow signal coverage for versatile fishfinding.
Model: 520PLD | 520BLD
Model Overview
Model
Power
Frequency (kHz)
Beam Angles (°)
Housing Type
Cable Length
Connector
Key Features
520PLD
600 W
50 / 200
45 / 15
Plastic (Airmar P319 style)
30 ft cable
10-Pin
Low profile plastic thru-hull, durable, dual frequency
520BLD
600 W
50 / 200
45 / 15
Bronze
30 ft cable
10-Pin
Low profile bronze thru-hull, robust construction, dual frequency
Key Features
Power: 600 watts for reliable sonar signal strength
Frequency: Dual 50/200 kHz for broad and detailed scanning
Beam Angles: Wide 45° and narrow 15° for general coverage and focused detection
Low-profile design minimizes drag and installation height
Housing: Plastic (520PLD) styled after Airmar P319, and sturdy bronze (520BLD)
30-foot cable with 10-pin connector for straightforward system integration
What’s in the Box
Furuno 520PLD or 520BLD low-profile thru-hull transducer