Humminbird

Humminbird XNT-9-SI-180-T TM Transducer

SKU: 30888 · UPC: 082324507502 · MPN: 710200-1
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02 · Overview

Humminbird XNT-9-SI-180-T TM Transducer — Product description

Unlock Crystal-Clear Underwater Views with the XNT-9-SI-180-T

Imagine gliding across the water, spotting fish hiding along drop-offs or structure from afar, and pinpointing the perfect bait placement without guesswork. The Humminbird XNT-9-SI-180-T transom mount transducer delivers that edge for serious anglers. This compact powerhouse combines side imaging, down imaging, and traditional 2D sonar, giving you a full-spectrum view of what's below and beside your boat. Built tough for rough waters, its redesigned bracket stays planted even in choppy conditions, thanks to an improved running angle and optional lockdown screw.

Whether you're chasing walleye in shallow bays or bass near submerged timber, the wide 86-degree dual side beams at 455 kHz reveal details up to impressive distances. Paired with precise 83/200 kHz 2D sonar (60/20-degree coverage), it paints a complete picture, all while monitoring water temperature for those subtle bite triggers.

Why Anglers Trust This Transducer for Reliable Performance

  • Superior Imaging Clarity: 455 kHz side and down imaging uncovers hidden structure and fish schools with photo-like detail, far beyond basic sonar.
  • Battle-Tested Durability: Engineered for harsh marine environments, the secure transom mount resists kick-up from waves or wakes, ensuring consistent readings at any speed.
  • Versatile Coverage: Expansive beam angles—86 degrees total side scan and focused down beams—let you cover more water efficiently, saving time on the hunt.
  • Plug-and-Play Simplicity: 20-foot cable with 7-pin connector makes setup straightforward on compatible units, minimizing downtime.
  • Integrated Temp Sensor: Real-time water temperature data helps dial in lure choices and track thermoclines where fish stack up.

Seamless Integration with Top Humminbird Models

This transducer shines brightest when paired with Humminbird's HELIX series and select older units. It powers up side imaging and down imaging on models like HELIX 5 SI GPS, HELIX 7 CHIRP SI GPS G2N, HELIX 9 SI GPS, and others in the 798ci/899ci HD SI lineup. Even classics like the 797c benefit from its capabilities. Always verify your unit's sonar specs for optimal frequencies—83/200 kHz for broad 2D sweeps and 455 kHz for high-res imaging.

Pro Tip: For maximum range, mount it on the transom centerline, 1/8-inch below the hull bottom, and adjust for your boat's deadrise angle to eliminate air bubbles and porpoising.

Effortless Transom Installation for Peak Performance

Mounting is a breeze with the included hardware. Clean the transom surface thoroughly, drill pilot holes per your boat's material, and secure the bracket firmly. Route the 20-foot cable inside the hull to avoid snags, using zip ties and conduit for protection. Fine-tune the running angle parallel to the waterline at cruising speed—typically 2-3 degrees down tilt—and engage the lockdown screw if trolling in heavy chop.

Common Pitfalls to Avoid: Steer clear of strakes, trim tabs, or jackplates that could interfere with the beam path. Test at various speeds post-install to calibrate sensitivity and eliminate interference.

  1. Select a flat transom spot free of turbulence.
  2. Position for clean water flow behind the prop.
  3. Tighten stainless bolts evenly to prevent vibration.
  4. Seal holes with marine sealant for watertight integrity.

Keep It Performing Like New: Simple Care Routine

Regular upkeep extends this transducer's life in saltwater or freshwater. After every trip, rinse with fresh water to flush salt or debris. Inspect the face for nicks or growth—gently scrub with a soft brush and non-abrasive cleaner. Store dry during off-seasons, coiled cable loosely to prevent kinks. If imaging fades, check cable connections and bracket alignment before assuming wear.

"I've run this on my bass boat through three seasons of tournaments—zero failures, even after backing off docks at speed." – Experienced tournament angler

Frequently Asked Questions

What frequencies does the XNT-9-SI-180-T support?

It handles 83/200 kHz for 2D sonar with 60/20-degree beams and 455 kHz for side/down imaging with 86-degree total side coverage, plus a temp sensor.

Is this transducer suitable for high-speed boating?

Yes, the redesigned bracket with optional lockdown screw prevents kick-up, maintaining clear images up to planing speeds in rough water.

How far does the side imaging reach?

Effective side imaging extends 80-100+ feet per side depending on conditions, depth, and unit settings—ideal for scouting structure quickly.

Can I use it on HELIX series fish finders?

Absolutely—it's compatible with HELIX 5, 7, and 9 SI GPS models, unlocking full CHIRP side and down imaging features.

What's the cable length and connector type?

20 feet of cable with a 7-pin modular connector for easy plug-in to matching Humminbird units.

Does it include a temperature sensor?

Yes, built-in temp probe provides accurate surface water readings to help locate baitfish and predict fish activity.

How do I mount it on my transom?

Bolt to a clean transom section, adjust angle for hull deadrise, and route cable securely—parallel to waterline at speed for best results.

Expert Tips to Maximize Your Imaging Results

Tweak your unit's gain and contrast for water clarity—lower in murky lakes, higher in clear rivers. Slow to 5-10 mph for detailed side scans, faster for 2D searches. Combine with GPS waypoints to map hotspots and return loaded with limits.

Humminbird has built its reputation by designing and manufacturing top quality, thoroughly reliable marine equipment. Your Humminbird is designed for trouble-free use in even the harshest marine environment. We encourage you to read this manual carefully in order to get the full benefit from all the features and applications of your Humminbird product.

Humminbird 7102001 Attributes

  • Mounting Location: Transom Mount
  • Number Of Pins: 7 Pin
  • Frequency Range: 83/ 200 kHz Beam Frequency, 455 kHz Operating Frequency
  • Supported Angle: 60/ 20 Degree Down Beam Angle/ 86 Degree Two Side Beam Angle
  • Cable Length: 20 Feet

Humminbird 7102001 Features & Benefits

  • Fishfinder For Humminbird Is Equipped With A High-Quality Transducer
  • Designing And Manufacturing Top Quality, Thoroughly Reliable Marine Equipment
  • Designed For Trouble-Free Use In Even The Harshest Marine Environment
  • Made In USA
  • Limited 1 Year Warranty

Humminbird 7102001 Installation Instructions

Humminbird 7102001 Warranties

Humminbird 7102001 Technical Bulletins


Humminbird XNT 9 SI 180 T

New transom mount transducer design. Compact dual/side imaging. 20/74/84 degree, 200/83/455 kHz with built in temperature. New design is more secure and is not a prone to kick up at high force of waves. It has an improved running angle and a optional lock down screw to override the kick up. Has same hole pattern as some older version transducers
For Use With: 797c

WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.



The new design is safer and not easy to kick in strong waves. It has an improved running angle and an optional locking screw to overcome the take-off phenomenon. Have ...
SKU: NVN-30888
MPN: 710200-1
UPC: 082324507502
03 · The numbers

Technical specifications

BrandHumminbird
ModelHumminbird XNT-9-SI-180-T TM Transducer
SKU / MFR#30888

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04 · Before you buy

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05 · Customer voices

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