Garmin GT20-TM – Fishing & Sonar | Marine Overhauling Florida

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Garmin GT20-TM

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The Garmin GT20-TM is a transducer for the shallow water fisherman who want traditional and CHIRP ClearVü scanning sonar.

From $99.99

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Ships from Pompano Beach, FL, United States.
Handling: 1 business day. Delivery: 1 to 7 business days within the United States.
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Garmin GT20-TM Transom Mount Transducer

The Garmin GT20-TM is a transom mount transducer designed for traditional and CHIRP ClearVü scanning sonar with a depth range of up to 1,900 ft (579 m) at 77 kHz. It is intended for installation on various boat types, enhancing fish finding capabilities.

Compatibility & Applications

Fits most transom-mounted installations for fishing boats up to 30 ft.
Pairs with Garmin echoMAP and GPSMAP chartplotters for enhanced sonar performance.
Mounts on trolling motors for versatile fishing applications.
Replaces older models like the Garmin GT21-TM without modification.
Integrates with NMEA 2000 networks for data sharing and connectivity.
Supports freshwater and saltwater fishing environments.

The unit provides excellent sonar imaging for shallow water fishing scenarios, ensuring accurate depth readings and fish detection. Its compatibility with multiple Garmin chartplotters differentiates it from generic transducers, offering enhanced functionality and reliability in various fishing conditions.

Technical Specifications

Weight	1.50 lbs
Dimensions (L × W × H)	6.10 × 2.60 × 0.90 in

Weight	1.5 lbs
Dimensions	6.1 × 2.6 × 0.9 in
Beam Angle	45° at 77 kHz, 24° at 200 kHz
Depth Range	Up to 1,900 ft (579 m) at 77 kHz, 800 ft (244 m) at 200 kHz
Power Output	500 W
Connector Type	4-pin
Operating Frequency	CHIRP 455/800 kHz
Temperature Sensor	Included
IP Rating	IPX7
Country of Origin	USA
Warranty	1 year
Option	GT20-TM Transom Mount DownVü 500W (CHIRP 455/800kHz); Traditional 500W (77/200kHz) Transducer w/Temp – 8-Pin, GT20-TM Transom Mount DownVü 500W (CHIRP 455/800kHz) Traditional 500W (77/200 Hz) Transducer w/Temp – 4-Pin, GT21-TH S/S Thru-Hull ClearVü and CHIRP, 600W 50/200kHz Traditional, 500W 260 and 455 ClearVü CHIRP, GT21-TM Transom Mount Transducer, Traditional 600W, 50/200kHz, ClearVü CHIRP 500W, 260 and 455kHz, GT23M-TH Stainless Steel, TH Mount Transducer, Mid-Band CHIRP/CHIRP DownVü – 260/455kHz, 500W, 8-Pin, GT22HW-TM Plastic, TM or Trolling Motor Transducer, High Wide CHIRP/CHIRP DownVü – 455/800kHz, 500W, 8-Pin, GT24UHD-TM Ultra High-Definition Scanning Sonar All-In-One Transducer, GT23M-TM Plastic, TM Transducer, Mid-Band CHIRP/CHIRP DownVü – 260/455kHz, 500W, 8-Pin

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Description

Garmin GT20-TM Transom Mount Transducer

Compatibility & Applications

Fits most transom-mounted installations for fishing boats up to 30 ft.
Pairs with Garmin echoMAP and GPSMAP chartplotters for enhanced sonar performance.
Mounts on trolling motors for versatile fishing applications.
Replaces older models like the Garmin GT21-TM without modification.
Integrates with NMEA 2000 networks for data sharing and connectivity.
Supports freshwater and saltwater fishing environments.

Technical Specifications

Weight	1.50 lbs
Dimensions (L × W × H)	6.10 × 2.60 × 0.90 in

Specification

Overview

Weight	1.5 lbs
Dimensions	6.1 × 2.6 × 0.9 in
Beam Angle	45° at 77 kHz, 24° at 200 kHz
Depth Range	Up to 1,900 ft (579 m) at 77 kHz, 800 ft (244 m) at 200 kHz
Power Output	500 W
Connector Type	4-pin
Operating Frequency	CHIRP 455/800 kHz
Temperature Sensor	Included
IP Rating	IPX7
Country of Origin	USA
Warranty	1 year
Option	GT20-TM Transom Mount DownVü 500W (CHIRP 455/800kHz); Traditional 500W (77/200kHz) Transducer w/Temp – 8-Pin, GT20-TM Transom Mount DownVü 500W (CHIRP 455/800kHz) Traditional 500W (77/200 Hz) Transducer w/Temp – 4-Pin, GT21-TH S/S Thru-Hull ClearVü and CHIRP, 600W 50/200kHz Traditional, 500W 260 and 455 ClearVü CHIRP, GT21-TM Transom Mount Transducer, Traditional 600W, 50/200kHz, ClearVü CHIRP 500W, 260 and 455kHz, GT23M-TH Stainless Steel, TH Mount Transducer, Mid-Band CHIRP/CHIRP DownVü – 260/455kHz, 500W, 8-Pin, GT22HW-TM Plastic, TM or Trolling Motor Transducer, High Wide CHIRP/CHIRP DownVü – 455/800kHz, 500W, 8-Pin, GT24UHD-TM Ultra High-Definition Scanning Sonar All-In-One Transducer, GT23M-TM Plastic, TM Transducer, Mid-Band CHIRP/CHIRP DownVü – 260/455kHz, 500W, 8-Pin

Customer Reviews

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Garmin GT20-TM

Garmin GT20-TM Transom Mount Transducer

Compatibility & Applications

Technical Specifications

Reviews

Description

Garmin GT20-TM Transom Mount Transducer

Compatibility & Applications

Technical Specifications

Specification

Overview

Customer Reviews

Reviews

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Professional Installation

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Garmin GT20-TM

Garmin GT20-TM Transom Mount Transducer

Compatibility & Applications

Technical Specifications

Reviews

Description

Garmin GT20-TM Transom Mount Transducer

Compatibility & Applications

Technical Specifications

Specification

<img src="https://marineoverhauling.com/wp-content/uploads/2022/12/overview.svg" title="overview" loading="lazy" width="24" height="24"> Overview

Customer Reviews

Reviews

Related Products

AIRMAR® CM599LH

GARMIN 10-TH Thru-Hull Temperature Sensor, 6 ft Cable

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GARMIN Airmar B175H 1kw Bronze Thru-Hull Mount Transducer with Depth & Temperature (20° tilt, 8-pin), 130-210 kH

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Shipping.

Need Help?

Online Payment.

Professional Installation

Garmin GT20-TM

Overview