Evologics Underwater Acoustic Modems 

Find the EvoLogics Modem Solution to Fit Your Requirements

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Device                                          Application

High-speed device for short-range applications in shallow waters

High-speed device for medium-range applications in shallow waters, 70-degrees conical beam pattern optimal for vertical or slant channels

High-speed device for short- and medium-range applications, wide-angle beam pattern for communication in vertical, slant and horizontal channels

All-round performer for medium-range applications

Depth-rated for long range, data transfer rates up to 9.2 kbit/s over 6000m range. Low power consumption, wide-angle transducer beam pattern (120 deg)

Depth-rated device for medium- and long-range applications, low power consumption - best for long-term deployment, 70-degrees conical beam pattern optimal for vertical or slant channels

Depth-rated device for long-range applications, hemispherical beam pattern, low power consumption - best for long-term deployment

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R-Series Underwater Acoustic Modems


S2C R series of underwater acoustic modems provide full-duplex digital communication using the EvoLogics patented S2C (Sweep-Spread Carrier) Technology, delivering an excellent performance, resistant to the challenges of a dynamic subsea environment. Self-adaptive algorithms adjust the S2C parameters to maintain the highest bit rate possible in current conditions.


The S2C R series offers a selection of short- mid- and long-range devices for shallow or deep water applications. Each product is available in a variety of configurations to offer the best-fit solution for a particular scenario.


Every S2C R Underwater Acoustic Modem was designed as a reliable tool to solve multiple communication tasks. It implements advanced data delivery algorithms, supports addressing and networking and is easy to control with a comprehensive set of commands and software-configurable settings.


M-Series Underwater Acoustic Mini-Modems


The S2C M-series offers the full benefits of the company's patented S2C (Sweep-Spread Carrier) communication technology in a light and compact design.


The S2C M-series is fully compatible with EvoLogics standard S2C R and S2C R USBL series and includes a selection of directional and non-directional short- and mid-range devices that fit various application scenarios, especially those where size and weight are critical. The M-series relies on EvoLogics S2C broadband communication technology to overcome the challenges of dynamic underwater environment and deliver a great performance in various subsea conditions. S2C M-series modems are smaller and lighter than the standard EvoLogics R-series devices, but deliver the uncompromising performance of the full-sized product line.

HS Series Underwater Acoustic Modems


The new high-speed mini-modem offers incredible 62.5 kbps for short-range transmissions.


S2C M modems are fully compatible with S2C R Modem, USBL and LBL ranges. They can extend existing infrastructure and seamlessly integrate into EvoLogics navigation and positioning systems.


The S2CM HS Modem can be supplied with a cable mounted transducer (up to 1.5 m cable length) to simplify system integration for UUVs or diver tracking systems.



  • Communication and positioning for AUVs and ROVs

  • Diver tracking and communication systems

  • Size- and weight-sensitive applications

  • High-speed communication in adverse cond