Garmin Airmar TM150M Transducer
Best mid-range CHIRP sonar for coastal and freshwater anglers.
The Garmin 010-11928-20 Airmar TM150M is a plastic transom mount transducer designed for depth and temperature readings. It utilizes CHIRP technology for enhanced sonar performance. With a power output of 300 watts, it can reach depths of up to 1,500 feet. The operating frequency ranges from 95 to 155 kHz, and it features a beamwidth of 26/17 degrees. This transducer is suitable for transoms with a 3 to 20-degree angle. It is manufactured by Garmin and Airmar, with the model number TM150M and part number 010-11928-20.
$239.95
Owner Satisfaction
4.6
/ 5
Category Rank
65
/ 391
#65 in Marine Electronics
Price vs Category Average
-70%
Below average
Power Output
300
/ W
Who it's for
- Anglers needing clear separation between fish and bottom structure
- Boaters seeking a balance of wide coverage and high detail
- Garmin users wanting seamless, plug-and-play sonar integration
Who should skip it
- Deep-sea anglers requiring high-performance signal strength
- High-speed boaters struggling with transom-mount turbulence
- Budget-conscious hobbyists looking for entry-level sonar options
Performance breakdown
Sonar Clarity
CHIRP technology delivers exceptional target separation and crisp underwater imaging.
Depth Capability
Reliable performance for coastal and mid-depth offshore fishing applications.
Mounting Versatility
Adjustable bracket accommodates a wide variety of common transom angles.
Build Durability
Rugged plastic housing stands up well to harsh saltwater conditions.
Data Precision
Provides highly accurate depth and temperature readings for consistent navigation.
Installation Ease
Straightforward transom mounting process suitable for most DIY boaters.
Key Specs
Power Output
300W
Technology
CHIRP
Maximum Depth
1,500 ft
Operating Frequency
95-155 kHz
Beamwidth
26/17 degrees
Mounting
3-20 degree transom
Manufacturer
Garmin, Airmar
Model Number
TM150M
Features
- Provides accurate depth and temperature readings.
- Utilizes CHIRP technology for superior sonar clarity.
- Suitable for a wide range of transom angles.
- Durable plastic construction for marine environments.
What customers say
Customers consistently praise the Garmin Airmar TM150M for its exceptional sonar clarity and robust build quality. Many users find that the CHIRP technology provides superior target separation compared to standard models. The installation process is straightforward which adds to its appeal for DIY boaters. While it represents a significant investment, the consensus points toward excellent long term reliability and performance. This transducer is a favorite for those seeking precise underwater imaging and dependable operation in various water conditions. It delivers a professional level experience for recreational anglers.
Know before you buy
CHIRP technology sweeps through a range of frequencies rather than sending a single pulse. This results in significantly higher resolution, better target separation, and clearer images of fish and bottom structures compared to traditional sonar.
The TM150M is designed for transoms with a deadrise angle between 3 and 20 degrees. If your boat falls within this range, the included mounting hardware should accommodate your installation.
This transducer is rated for a maximum depth of 1,500 feet. Performance at this depth can vary based on water conditions, bottom composition, and your specific sonar unit settings.
Yes, the TM150M includes a built-in temperature sensor. It provides both depth and water temperature readings simultaneously to your compatible Garmin display.
This transducer features a variable beamwidth of 26 to 17 degrees. A wider beam at lower frequencies covers more area, while a narrower beam at higher frequencies provides more detail and precision for identifying targets.
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$240