HE-773B 290kHz Manual Sonar

The Hondex HE-773B is the black box version of the popular HE‑773 sonar, delivering the same powerful multi‑mode sonar performance in a flexible format designed for custom installations and paired displays.

The Hondex HE‑773 has been designed specifically for skippers operating small inshore fishing vessels who need a cost-effective, versatile sonar solution. With successful installations across Scotland, England, and Ireland, feedback from users has been overwhelmingly positive.

The Hondex HE‑773B Black Box Sonar combines powerful multi‑mode sonar features with installation flexibility, making it ideal for inshore commercial and recreational fishing vessels. Whether installed in a new build or retrofit, it gives skippers a clearer picture of seabed and fish activity across all depths.

• TD303 (290 kHz): High-resolution imaging, ideal for detecting small baitfish such as sardine, mackerel, herring, and anchovy.
• TD304 (140–240 kHz): Longer detection range (1.5–2× greater than TD303), with slightly lower image resolution.

Unique to the HE-773 is the 4-display mode where 4 separate sonar pictures can be displayed each with their own range/tilt settings, allowing the operator to see if fish are going deeper or rising to the surface.

Key Features

• Black Box Format: Install the sonar unit remotely and pair it with your choice of display.
• User-Friendly Menu System: Easy navigation with multiple display modes for different fishing tasks.
• Full Circle Scan Mode: Detects fish schools at any bearing around the vessel.
• Vertical Scan Mode: Provides a 180° cross-section view of the seabed and any fish schools within the selected profile angle.
• Echosounder Mode: Functions as a conventional echosounder, ideal for shallow water fishing.
• 4-Display Mode: Shows four separate sonar pictures simultaneously, each with independent range and tilt settings, helping operators track fish movement in depth.
• Ultra-Compact Sonar: Available in manual or automatic versions.
• Standard Sonar Tube: 1 meter supplied; optional lengths available for most vessel types.
• Professional Guidance: Echomaster Direct can provide advice on installation requirements and solutions.

In the Box

Hondex HE-773B Sonar Processor, Controller, Manual Hoist, 1m Plastic Sonar Pipe (longer lengths of pipe can be selected) and a TD303 290kHz Transducer