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Imagine gliding through coastal waters or chasing pelagics offshore, where every sonar ping reveals hidden structures, bait schools, and trophy fish with crystal clarity. The Raymarine TM185HW transom-mount transducer delivers exactly that, blending high-frequency CHIRP prowess with a generous wide beam for unmatched coverage. Anglers and boaters who demand precision in shallow zones—down to intricate bottom contours and separated targets—find this 1kW unit indispensable for elevating their on-water game.
Unlike traditional narrow-beam transducers that leave gaps in your scan, the TM185HW's fixed 25° beamwidth sweeps twice the area in the upper water column. Operating across 150-250 kHz, it locks onto the sweet spot around 200 kHz for baitfish and gamefish while spanning 100 kHz of bandwidth. This means sharper fish arches, detailed wrecks, and drop-offs, even in depths up to 500 feet. Paired with fast-response temperature sensing, you'll track thermoclines and prime feeding zones effortlessly.
Mounting the TM185HW is straightforward for DIY enthusiasts or pros. Aim for a 3° to 21° transom angle to match your hull's deadrise, ensuring the ceramic face stays perpendicular to the waterline for optimal beam projection. Drill-free bracket secures firmly, and the 9.2 lb. unit positions low on the transom to minimize air entrainment at speed. Pro tip: Pair with anti-fouling paint on the housing for longevity in fouled waters, and route cables away from interference sources like engines for clean signals.
Raymarine's Xducer ID technology auto-identifies the transducer on compatible multifunction displays, streamlining setup and preventing mix-ups. CHIRP-ready design future-proofs your system, adapting to evolving sounder tech without hardware swaps. For those eyeing alternatives, this model's transom focus outperforms in-hull or thru-hull options on smaller craft needing quick installs and easy service.
Crafted with seamless urethane over precision ceramics, the TM185HW withstands pounding seas and trailering stresses. Regular freshwater rinses post-salt exposure keep the fast-temp probe accurate, while avoiding high-pressure washes preserves the acoustic window. Boaters report years of flawless performance, making it a smart investment for frequent fishers chasing stripers, snapper, or tuna.
CHIRP pulses across a broad frequency range (150-250 kHz here), delivering clearer images, better target separation, and depth penetration than fixed-frequency sonar, especially for distinguishing fish from bait in cluttered waters.
Yes, it's optimized for vessels up to 33 feet, including planing hulls like center consoles, with easy transom mounting that handles speeds without cavitation issues when installed correctly.
Measure your hull's deadrise angle and adjust the bracket between 3° and 21° so the transducer face is parallel to the water surface at rest—use a digital level for precision.
It reliably performs to 500 feet (152 m), with exceptional detail in shallows under 100 feet where the wide beam excels at covering broad areas.
The constant 25° width doubles coverage versus typical 12-15° beams, spotting more fish arches and structure from afar without sacrificing resolution—perfect for searching large swaths quickly.
Yes, the fast-response thermistor provides real-time water temp data, aiding in locating temperature breaks where fish congregate, with reliability proven in varied conditions.
Absolutely—it's recommended for both planing and displacement hulls, offering stable performance at displacement speeds with the transom mount's forgiving design.
Raymarine TM185HW 1Kw Depth and Temperature CHIRP Transom Mount
Model: A80804Get more coverage under your boat with Airmar’s unique, wide-beam, high-frequency, Chirp-ready TM185HW. The high-frequency band operates across a range of 150 to 250 kHz and has a fixed 25° beam. The high-frequency band yields superior shallow-water performance, bottom detail, and fish-target separation. The constantly wide beam provides twice the coverage for detecting fish in the upper-water column and clear fish arches on the display compared to most high-frequency, narrow-beam transducers. The high wide is the ideal choice for both inshore and pelagic fishing, where resolution and maximum coverage are essential down to 152 m (500').
Specifications| Power Rating | 1 kW |
| Transom Angle | 3° to 21° |
| Functions | Depth, Temperature |
| Max Vessel LOA | Up to 10 m (33') |
| Acoustic Window | Urethane |
| Common Use | Leisure/Yachting, Fishing |
| Freq Hi Wide | 150-250 kHz |
| High-Wide Beamwidth | 25° |
| Housing | Urethane/Stainless Bracket |
| Hull Material | Compatible w/ all hull materials |
| Max Depth | 150 m (500') |
| Mounting Style | Transom |
| Retractable housing | No |
| Single or Dual Frequency | CHIRP-Ready Single-Band |
| Tilted Element | No |
| Weight: | 4.2 kg (9.2 lb.) |
Ships within 48 hours · Estimated delivery Jun 24 - Jun 29
US$40
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