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Garmin

Garmin GT56UHD-TM Transducer

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

All-in-one Transducer

Ultra High-Definition ClearVu, SideVu, and

Clearvu Scanning

Sonar provides image clarity of

Sidevu Scanning

Sonar shows structure and fish

Sidevu Sonar

20% greater range at 1,000

High Wide

CHIRP traditional sonar delivers clear

$599.99
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SKU: WX2*0728764

Overview

Built for anglers who want a single transducer to handle multiple sonar views, this Garmin unit combines Ultra High-Definition ClearVu, SideVu, and high wide CHIRP traditional sonar in one package. It is designed to help you identify structure and fish below and to the sides of the boat, with vivid imaging and multiple frequencies for use across different depths. The transom-mount setup is intended for the back of a boat hull, and the included hardware also supports trolling motor installation. For boaters who want broad sonar coverage without switching between separate units, it offers a practical all-in-one approach.

Why Hunters Choose the Garmin

All-in-one Transducer

Combines ClearVu, SideVu, and high

Ultra High-definition

ClearVu provides detailed views of

Ultra High-definition

SideVu shows structure and fish

Sidevu Offers

20% greater range at 1,000

High Wide

CHIRP delivers clear target separation

Key Features

  • All-in-one transducer with Ultra High-Definition ClearVu, SideVu, and high wide CHIRP traditional sonar.
  • ClearVu scanning sonar provides image clarity of structure and fish below your boat.
  • SideVu scanning sonar shows structure and fish off the sides of your boat.
  • SideVu sonar offers 20% greater range at 1,000 kHz.
  • High wide CHIRP traditional sonar delivers clear target separation and definition up to 800 feet.
  • Includes transom mount installation hardware and can also be installed on a trolling motor.

Best Used For

  • Boat anglers wanting Ultra High-Definition scanning sonar for structure and fish below and beside the boat
  • Users needing transom mount installation with included trolling motor mounting options
  • Anglers fishing varying depths who want 455 kHz, 800 kHz, and 1,000 kHz coverage
  • Boaters prioritizing clear target separation with high wide CHIRP traditional sonar
  • Serious fishermen seeking vivid sonar imaging for locating targets and structure

Specifications

Chirp Frequency Range150-240 kHz
Clear Vu Frequencies455/800/1000 kHz
Frequency Support455 kHz, 800 kHz, 1,000 kHz
Included AccessoriesTransom mount, mounting hardware, ferrite beads, documentation
Installation OptionsTransom mount installation; can be installed on a trolling motor with included equipment
Maximum Depthup to 800' below your boat
Mount TypeTransom mount
Scanning SonarUltra High-Definition ClearVu and SideVu scanning sonars
Side Vu Frequencies455/800/1000 kHz
Side Vu Range Increase20% greater range at 1,000 kHz
Traditional SonarHigh wide CHIRP traditional sonar
Transducer TypeTransom mount

Pros

  • All-in-one transducer combines ClearVu, SideVu, and high wide CHIRP sonar.
  • Ultra High-Definition ClearVu provides detailed views of structure and fish below.
  • Ultra High-Definition SideVu shows structure and fish off to the sides.
  • SideVu offers 20% greater range at 1,000 kHz.
  • High wide CHIRP delivers clear target separation and definition up to 800 feet.
  • Includes transom mount and trolling motor installation hardware.

Considerations & Trade-offs

  • Transom mount installation is designed for the back of the boat hull, so it may not suit every rig or mounting preference without the included trolling motor option.
  • The transducer is built around multiple sonar modes and frequencies, which adds versatility but also means setup and interpretation may be more involved than a single-purpose unit.
  • High wide CHIRP traditional sonar is specified up to 800' below the boat, while the scanning sonar modes are optimized differently, so each mode has its own practical use case rather than one universal setting.
  • The package includes mounting hardware and documentation, but it does not include a display unit or other electronics needed to use the transducer.

Suggested Comparisons

  • Transom-mount transducers
  • Trolling motor transducers
  • Scanning sonar transducers
  • CHIRP traditional sonar transducers

Suggested Accessories

  • Transducer mount hardware
  • Trolling motor mounting accessories
  • Sonar cable management accessories
  • Fish finder display unit

Frequently Asked Questions

What sonar views does the GT56UHD-TM provide?

It offers Ultra High-Definition ClearVu scanning sonar, Ultra High-Definition SideVu scanning sonar, and high wide CHIRP traditional sonar.

What frequencies are supported by this transducer?

The product data lists 455 kHz, 800 kHz, and 1,000 kHz, and says the high-wide CHIRP sonar has a frequency range of 150–240 kHz in each transmission.

How is the GT56UHD-TM mounted?

The transducer is designed for transom mount installation on the back of a boat hull. The included equipment also allows installation on a trolling motor.

What is included in the box?

The box includes the GT56UHD-TM transducer, transom mount, mounting hardware, ferrite beads, and documentation.

Does the product data specify how deep it can read?

The description says high wide CHIRP traditional sonar provides target separation and definition up to 800' below the boat. It does not provide a depth rating for every sonar mode.