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Airmar B75C-20-M-MM Medium CHIRP Thru-Hull Transducer 600W 20° Tilt Bronze

Manufacturer

Airmar

<h3>Airmar Technology Corporation: Leaders in Marine Sensing</h3><p><strong>Airmar Technology Corporation</strong> has been at the forefront of acoustic and ultrasonic sensing since its founding in 1982 in Milford, New Hampshire. Over more than four decades, the company has grown from a single-product transducer manufacturer into the world&apos;s leading designer and maker of high-performance marine sensing technology — earning a reputation for precision, durability, and innovation across recreational, commercial, scientific, and military applications.</p><p>At the core of Airmar&apos;s identity is a deep expertise in ultrasonic technology. As one of the company&apos;s directors famously put it, Airmar doesn&apos;t build marine electronics — it builds high-end &quot;speakers.&quot; That philosophy has made Airmar the trusted OEM partner behind the transducer technology found inside some of the biggest names in marine electronics. From sport fishing to offshore surveying, Airmar products are engineered to deliver reliable, high-resolution data whether you&apos;re chasing gamefish in shallow freshwater or conducting hydrographic surveys at depth.</p><h3>Marine Transducers for Every Application</h3><p>Airmar&apos;s lineup of marine transducers spans everything from entry-level transom-mount sensors to professional-grade CHIRP thru-hull transducers capable of reading extraordinary depths. Their CHIRP-ready transducers operate across low, medium, high, and high-wide frequency bands, providing anglers and mariners with exceptional target separation, bottom detail, and depth performance. Crucially, Airmar&apos;s &quot;Mix &amp; Match&quot; cable system means a single transducer body can be paired with brand-specific adapter cables — making it easy to upgrade your electronics without swapping out the transducer itself.</p><p>Airmar transducers are engineered to work seamlessly with leading marine electronics platforms. Their <a href="/11479-airmar-raymarine-transducers-accessories-202422">Raymarine-compatible transducers and accessories</a> are a popular choice for Axiom and other Raymarine multifunction display users who want industry-leading sonar performance. Likewise, Airmar&apos;s <a href="/11479-airmar-humminbird-transducers-cables-accessories-202118">Humminbird-compatible transducers, cables, and accessories</a> — including dedicated 9-pin and 14-pin connector variants — integrate directly with Helix, SOLIX, and APEX fish finders for plug-and-play CHIRP capability.</p><h3>WeatherStation Instruments</h3><p>Beyond transducers, Airmar is renowned for its WeatherStation® instruments — all-in-one ultrasonic weather sensors that consolidate multiple measurement capabilities into a single compact, rugged housing. Using proprietary ultrasonic technology with no moving parts, these instruments measure wind speed and direction, temperature, humidity, barometric pressure, and rainfall simultaneously. Because they rely on ultrasound rather than mechanical anemometers, they are immune to bearing wear and unaffected by salt, dirt, and marine fouling — making them exceptionally reliable in harsh environments.</p><p>WeatherStation instruments are deployed worldwide on fixed marine platforms, unmanned surface vehicles (USVs), research vessels, and land-based weather monitoring stations. They are trusted by organizations ranging from recreational boaters to national oceanographic centers.</p><h3>Quality and Warranty</h3><p>Airmar&apos;s commitment to quality is reflected in its manufacturing process — largely hands-on and craftsmanship-driven — and in its warranty program. As of 2025, Airmar extended its standard product warranty to three years across its full lineup, including transducers and sensors. Installers who are Airmar Certified Installers (ACIs) can offer customers an exclusive extended warranty on qualifying transducers, reinforcing the brand&apos;s long-term support philosophy.</p>

Part Number

B75C-20-M-MM
06/01/2036 1:33 PM
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$724.93

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Product Details

The Airmar B75C-20-M-MM is a high-performance bronze thru-hull CHIRP transducer designed for serious anglers and commercial fishermen operating vessels up to 25 feet. This medium CHIRP transducer delivers exceptional underwater imaging with 600 watts of power, enabling bottom detection down to 3,000 meters (10,000 feet) with 5 to 10 times greater detail than conventional sonar.

Key Features:

  • Medium CHIRP frequency range: 80 kHz to 130 kHz with 50 kHz total bandwidth
  • Beamwidth: 24° to 16° for optimal coverage and target separation
  • 20° tilted element design for optimal performance on deadrise hulls
  • 600W power rating for deep water penetration
  • Integrated fast-response water temperature sensor
  • Covers popular fishing frequencies of 88 kHz and 107 kHz plus entire bandwidth range
  • Durable bronze housing suitable for fiberglass and wood hulls
  • Exclusive Xducer ID® technology for automatic transducer recognition

The B75C-20-M-MM provides unprecedented detail and resolution, allowing you to distinguish between individual baitfish, game fish, and underwater structures. The CHIRP technology delivers one continuous sweep of frequencies, providing a much better signal-to-noise ratio than traditional single-frequency transducers.

Important: This transducer requires a separate Mix and Match cable (sold separately) to connect to your chartplotter or fishfinder. The Mix and Match system allows you to choose the appropriate cable for your specific electronics brand.

Specifications:

  • Recommended boat size: Up to 8 meters (25 feet)
  • Hull compatibility: Fiberglass or wood hulls
  • Mounting style: Thru-hull with 20° tilted element
  • Housing material: Bronze
  • Maximum depth: 3,000 meters (10,000 feet)

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