Airmar R111C-LM Transducer CHIRP In Hull

Overview

Built for serious inshore and offshore anglers who need the flexibility to shift between shallow structure hunting and deep-water canyon work on the same transducer. If you're running a solid fiberglass hull and want CHIRP sonar that covers both low and medium frequencies without swapping hardware, this is your transducer.

The R111C-LM is a dual-frequency CHIRP transducer that gives you 87 kHz of total bandwidth in one in-hull unit. That means you get the wide beam angles and shallow-water performance of low-frequency CHIRP (38–75 kHz), plus the tight focus and detail of medium-frequency CHIRP (80–130 kHz). You'll cover all the popular fishing frequencies—38, 50, 88, and 107 kHz—plus everything in between, all without changing transducers.

Key Features

• Dual-Frequency CHIRP (38–75 kHz and 80–130 kHz) — shifts between wide beam angles (19° to 10° on low frequency) and narrow beam angles (13° to 8° on medium frequency) — gives you the coverage you need in shallow water and the resolution you need when targeting suspended fish or deep structure.
• 87 kHz Total Bandwidth — covers recreational and commercial inshore and offshore fishing frequencies from one transducer — you won't waste time or money swapping units for different depth zones or fishing scenarios.
• In-Hull Installation — mounts inside your solid fiberglass hull without through-hull drilling — faster install, lower profile, and less concern about through-hull fitting maintenance.
• Fast-Response Water-Temperature Sensor — integrated temp reading tied directly to your sonar — helps you identify thermoclines and seasonal patterns that move fish.
• Urethane Transducer Housing — durable, corrosion-resistant construction — built to handle saltwater and freshwater abuse without degradation.

Specs & What's Included

Compatibility: In-hull installation only. Requires a solid fiberglass hull with 0° to 22° deadrise. Works with any fish finder system that supports dual-frequency CHIRP input (check your head unit's transducer compatibility before ordering). Not sure if this works with your setup? Call or text us at (833) 831-4077—we'll tell you straight.

In the Box: Transducer, mounting hardware, and installation tank. Cable length and connector type depend on your specific fish finder head unit—confirm compatibility with your manufacturer before purchase.