TM150M — Sonde CHIRP tableau arrière 300 W 95-155 kHz profondeur et température

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Airmar

AI-31-770-2-04

TM150M — Airmar CHIRP transducer, transom mount, 300 W, 95–155 kHz depth and temperature

The AIRMAR TM150M transducer is a CHIRP in-hull transducer offering depth and temperature capabilities. It operates across a mid-frequency band of 95 to 155 kHz with 300 W power, ensuring balanced detection between depth (up to 183 m) and detail. Ideal for boats up to 8 meters, it maintains clear images even at high speeds.

Retail priceBenefit from the professional rate

488,80€

488,80€ ~~529,00€~~

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Available in stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

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Support service

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Technical specifications

Fishfinder frequencies	95–155 kHz
Mounting type	Bracket
Chirp Medium Frequency Range	95–155 kHz
Frequency Bandwidth Khz	60
Installation Vertical Space Required	89
Pilot Hole Depth Mm	22
Sonar Max Depth	183
Transducer Extension Below Transom Mm	3
Transom Angle Adjustment Range	3–20

Detailed description

The AIRMAR TM150M is a CHIRP transducer for transom mounting, designed for accurate depth and temperature sensing. Operating in the mid-frequency range from 95 to 155 kHz, it delivers 300 W (with a 1% duty cycle) in pulsed mode and 5 W in CW. This frequency range is optimized to balance deep-sounding capability with detail resolution, offering better range than high frequencies and better resolution than low frequencies.

Performance and beam coverage

With a total bandwidth of 60 kHz from a single transducer, the TM150M achieves a maximum depth of 183 m (600 ft). Its CHIRP design delivers clear images even at high boat speeds. The beam provides 7 m coverage under the boat (at 15 m depth), extending to 70 m (at 152 m depth). The beam angle ranges from 26° (-3 dB) at 100 kHz to 17° (-3 dB) at 155 kHz, adapting to different detection conditions.

Installation and design

Designed for transom mounting, it allows adjustable tilt angles from 3° to 20° to suit various hull configurations and optimize performance up to 44 knots (50 mph). Installation requires drilling 4 mm holes for the bracket, with a 3 mm sensor projection below the lower edge of the transom for optimal detection. Note that mounting this transducer inside the hull is not recommended to avoid overheating. Recommended for boats up to 8 m (25 ft).

Documentation

Type	Nom
	EN - Transom-Mount-Chirp - TM150M
	EN - Donnees-acoustiques-95-155A - TM150M
	EN - Notice-installation-17-499-02 - TM150M

Expert opinion

« Technical analysis: Airmar TM150M CHIRP transducer, versatility and performance »

The Airmar TM150M transducer is a strategic choice for recreational boaters and anglers seeking a balance between depth range and detail detection capability. As a CHIRP mid-frequency transducer (95–155 kHz), it is ideally suited for a variety of applications, from coastal navigation to intermediate-water fishing, where high-frequency transducers may lack range and low-frequency transducers may lack resolution. Its frequency range offers valuable versatility for identifying underwater structures and fish schools without sacrificing depth, with a maximum range of 183 meters (600 feet).

Regarding installation, the TM150M is designed for transom mounting, a common and relatively straightforward configuration for boats under 8 meters. The adjustable tilt angles (3° to 20°) are a major advantage for compensating for the transom angle and ensuring optimal beam orientation, even at speeds up to 44 knots. It is critical to follow installation guidelines, including positioning 3 mm below the lower edge of the transom and using the specified hole diameters (4 mm for the bracket, 3 mm for the clamp), to avoid interference and optimize signal quality. A particular point of attention is the prohibition of installation inside the hull, which would cause overheating and degrade performance.

This model stands out for its ability to maintain a clear image at high cruising speeds and for providing a wider beam coverage at moderate depths compared to traditional high-frequency transducers. While it is not intended for deep-sea exploration (where a low-frequency transducer would be required), the TM150M offers significant added value for fish detection and bottom mapping within its optimal operating range.

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