Garmin GT15M-IH Plastic, In-Hull, Mid-Band CHIRP Transducer - 85-165kHz, 600W, 8-Pin
Garmin GT15M-IH Plastic, In-Hull, Mid-Band CHIRP Transducer - 85-165kHz, 600W, 8-Pin — Product description
Why Choose the Garmin GT15M-IH In-Hull Transducer for Your Vessel?
Boaters who prioritize clean hull lines and reliable performance at speed often turn to in-hull transducers like the Garmin GT15M-IH. Mounted securely inside a fiberglass hull, this mid-band CHIRP unit sidesteps the pitfalls of transom mounts—no more worrying about cavitation bubbles disrupting your sonar readings during high-speed cruises. Whether you're chasing offshore species or navigating coastal waters, it delivers crisp, consistent depth data up to 1,900 feet in freshwater, keeping you informed without compromising your boat's hydrodynamics.
Engineered with a rugged plastic housing and four adjustable tanks, the GT15M-IH adapts effortlessly to hull deadrises from 0 to 25 degrees. Its 600W power output paired with 85-165 kHz CHIRP technology excels at separating targets, revealing structure and fish with exceptional clarity that traditional fixed-frequency sonar can't match. High-speed anglers appreciate how it maintains pinpoint accuracy even when pushing 30+ knots, turning your chartplotter into a trusted ally on the water.
Key Performance Advantages
- High-Speed Stability: Forget erratic readings from surface interference; in-hull design ensures steady performance when planing or running fast.
- Versatile CHIRP Coverage: Mid-band frequencies (85-165 kHz) strike a perfect balance for mid-depth scanning, with beam widths of 24° low/13° high for detailed bottom contouring.
- Hybrid Setup Potential: Pair it with a transom-mounted GT30-TM via adapter for all-around capability—depth at speed, side/down scanning at rest.
- Durable Build: 20-foot cable reaches most installations, and the 8-pin connector integrates seamlessly with Garmin's ecosystem of sounders and multifunction displays.
Real-world users rave about its sensitivity in varied conditions, from murky bays to clear blue water, making it a staple for serious sportfishing and cruising setups.
Technical Specifications at a Glance
| Specification | Details |
|---|---|
| Frequency Range | Mid-Band CHIRP 85-165 kHz |
| Beam Width (-3dB) | 24°/13° (LF/HF) |
| Transmit Power | 600W |
| Max Depth (Freshwater) | 1,900 feet |
| Cable Length | 20 feet |
| Connector | 8-pin |
| Hull Deadrise | 0° to 25° |
| Water Temp Sensor | No |
What's Included for Easy Setup
- GT15M-IH transducer unit
- Four plastic tanks for precise positioning
- Mounting hardware kit
- Documentation for guided installation
Everything you need arrives ready to go, minimizing downtime and extra trips to the marine store.
Pro Tips for Optimal Installation and Use
Fiberglass hulls demand careful prep—select a flat spot forward of the propeller, away from strakes or thru-hulls that could cause air pockets. Fill the tanks with a sound-transparent liquid like antifreeze or propylene glycol mix for peak transmission. Test at idle first, then gradually increase speed to fine-tune. For best results, couple with Garmin's ClearVü or SideVü compatible units to unlock panoramic views when conditions allow.
Maintenance is straightforward: Rinse after saltwater exposure and inspect cable routing seasonally to prevent chafing. This transducer's reliability shines in demanding environments, backed by Garmin's commitment to marine-grade toughness.
Frequently Asked Questions
What makes the GT15M-IH ideal for high-speed boating?
Its in-hull mounting eliminates cavitation from prop wash, providing stable depth readings even at planing speeds over 30 knots.
Does this transducer work on all hull types?
Best suited for fiberglass hulls with 0-25° deadrise; not recommended for metal or wood hulls due to signal distortion.
Can I combine it with other Garmin transducers?
Yes, use an adapter cable with a GT30-TM for dual-transducer operation: depth at speed, scanning at troll speeds.
What's the maximum depth capability?
Up to 1,900 feet in freshwater; performance varies in saltwater based on conditions and display settings.
How do I fill the plastic tanks?
Use a marine-safe liquid like propylene glycol or Garmin-approved filler to match hull density and maximize sonar transmission.
Is there a temperature sensor included?
No, this model focuses on CHIRP sonar for depth and structure; pair with a separate temp probe if needed.
What cable length does it have?
A 20-foot cable provides ample reach for most console or cockpit installations.
Garmin make products that are engineered on the inside for life on the outside. We bring GPS navigation and wearable technology to the automotive, aviation, marine, outdoor and fitness markets. We believe every day is an opportunity to innovate and a chance to beat yesterday. We offer products with essential utility, leading-edge technologies, compelling features, and exceptional ease-of-use to create clear differentiators our customers appreciate and desire.
Garmin 101240200 Attributes
- Mounting Location: In-Hull Mount
- Number Of Pins: 8 Pin
- Depth: 1900 Feet For Freshwater
- Power Rating: 600 Watt
- Frequency Range: 85-165 kHz Mid CHIRP Operating Frequency
- Supported Angle: 0 To 25 Degree Deadrise
- Cable Length: 20 Feet
Garmin 101240200 Features & Benefits
- GT15M-IH Transducer Is Ideal For Boats That Want To Install The Transducer Inside A Fiberglass Hull And Not On The Transom Where Cavitation Could Cause Issues
- Can Be Used With A Hull Deadrise Angle Between 0 And 25 Degree
- Excellent For Boats Traveling At High Speeds That Want To Maintain Accurate Depth Readings
- 600 Watt 8-Pin Transducer With 4 Plastic Tanks Features Mid-Band CHIRP Traditional Sonar
- Can Be Used In Conjunction With A GT30-TM Transducer And An Adapter Cable So You Can Maintain Depth At High Speeds And Scanning Capabilities At Trolling Speeds
- Limited 2 Year Warranty
Garmin 101240200 Installation Instructions
Garmin 101240200 Warranties
GT15M-IH Plastic, In-Hull, Mid-Band CHIRP Transducer - 85-165kHz, 600W, 8-Pin
GT15M-IH transducer is ideal for boats that want to install the transducer inside a fiberglass hull and not on the transom where cavitation could cause issues. It can be used with a hull deadrise angle between 0 and 25 degrees and is excellent for boats traveling at high speeds that want to maintain accurate depth readings.
The 8-pin transducer with 4 plastic tanks features mid-band CHIRP traditional sonar (85-165 kHz) and has a power rating of 600 W. It can be used in conjunction with a GT30-TM transducer and an adapter cable so you can maintain depth at high speeds and scanning capabilities at trolling speeds.
For installation, follow the included instructions carefully to avoid damaging your boat.
Garmin gt15m-ih is an 8-pin sensor with 4 plastic tanks in the ship. It has an intermediate frequency CHIRP traditional sonar (85-165 kHz) and a rated power of 600W. it has...
SKU: NVN-58960
MPN: 010-12402-00
UPC: 753759148577
Technical specifications
| Brand | Garmin |
| Model | Garmin GT15M-IH Plastic, In-Hull, Mid-Band CHIRP Transducer - 85-165kHz, 600W, 8-Pin |
| SKU / MFR# | 58960 |
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