The Garmin GT8HW-TM Transom Mount is a CHIRP-depth transducer tailored for shallow-water anglers who want crisp bottom detail and wide, easy-to-read arches. Its durable plastic housing and flexible mounting options make transom or trolling-motor installations straightforward across a wide range of boats.
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Frequency: CHIRP 145-240 kHz
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Transmit Power: 250 W
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Max Depth: 800 feet
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Beam Width: LF 24° / HF 16° (-3 dB)
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Read Water Temperature: Yes
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Connection: 8 pin
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Cable Length: 20 feet
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Mounting Options: Transom or trolling motor mounting
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Housing Material: Durable plastic with mount-ready design
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In the Box: GT8HW-TM transducer, transom mount, trolling motor mount, mounting hardware, and documentation
With high-wide CHIRP sonar, you’ll see crisp bottom definitions and distinct fish arches across a wider water column, helping you identify structure and targets more quickly. The 800-foot depth range supports a variety of fishing spots, while temperature readings add context to fishing conditions. The 20-foot cable provides flexible routing, and the 8-pin connection simplifies installation. For the best results, follow the included installation instructions to ensure optimal performance and to avoid boat damage.
| Frequency |
CHIRP 145-240 kHz |
| Transmit power |
250 W |
| Max Depth |
800 feet |
| Beam Width (°) LF/HF (-3dB): |
24/16 |
| Read water Temperature |
Yes |
| Connect |
8 pin |
| Cable Length |
20 feet |