CM599LM Depth/Temperature Transducer

Part # CM599LM

The CM599LM is a tank, pocket or keel-mounted CHIRP transducer, ideal for sportfishing and commercial vessels. This dual-channel transducer combines Low CHIRP frequencies to accurately track the bottom in deep water, and Medium CHIRP for greater resolution with minimal loss of depth penetration.

Key Features

  • 28-60 kHz Low CHIRP with 23-9° port/starboard beam width (11-5° fore/aft)
  • 80-130 kHz Medium CHIRP with 13-8° beam width
  • Up to 1200 m (4000 ft) range with Low CHIRP
  • 25 internal broadband ceramics
  • Tank/Pocket/Keel-mounted (same shape and size as R599 and CM199)
  • Suitable for fiberglass hulls only
  • Ideal for sportfishing and commercial vessels
  • Recommended for use with the BSM-3 broadband sounder module
Where To Buy

    Dual Channel CHIRP

    Using pulsed transmissions swept across a range of frequencies, CHIRP technology delivers target resolution and depth penetration superior to traditional single-frequency sonar. This dual-channel CHIRP transducer operates in the 28-60 kHz Low CHIRP frequency range with a 23-9° port/starboard beam width (11-5° fore/aft), and the 80-130 kHz Medium CHIRP frequency range with a 13-8° beam width. With Low CHIRP, the CM599LM provides an operating depth of up to 1200 m (4000 ft).


    One sensor does it all. Able to measure both depth and temperature in a single package, the CM599LM simplifies installation and requires just one connection to your echosounder module or multifunction display.


    The CM599LM is suitable for tank, pocket or keel mounting in fiberglass hulls only.

    Pocket- or keel-mounting installs the transducer flush to the hull in a custom pocket, providing minimal drag and good high-speed performance. Boat builders may incorporate this transducer in new hulls, and aftermarket installation is possible by routing a suitable hole and fiberglassing the transducer in place.

    Tank-mounting places the transducer in a seawater-filled tank on the outside of the hull, with the active face and sides of the transducer exposed to seawater inside the tank. A hole must be drilled through the hull for the transducer cable to enter via a stem or stuffing tube.

    Calculate the beamwidth for this transducer

    CM599LMFrequencyCone AngleBeamwidth
    80 kHz 13°  
    130 kHz  
    28 kHz 23°  
    60 kHz  
    Depth: Update
    NB: depending on the strength of your transducer pulse