Subnero M25M Series modem with dual receiver channel configuration, showing two underwater connectors and antennas for multi-hydrophone acoustic arrays

Subnero multi-receiver modem kit including two acoustic smart modems, additional hydrophone cable, and a rugged transport case

Subnero M25M Series multi-receiver acoustic smart modem deployed outdoors with a harbor in the background, showing its dual-channel antenna setup

Additional hydrophone receiver element with cable and connector for Subnero multi-receiver acoustic smart modems

Subnero multi-receiver modem thumbnail – dual-channel upright view

Subnero multi-receiver modem thumbnail – kit with case and cable

Subnero multi-receiver modem thumbnail – outdoor field deployment

Subnero multi-receiver modem thumbnail – additional hydrophone cable accessory

Silver Edition

Additional Receiving Channels

Adding extra receiving channels enhances the modem’s capability by incorporating multiple hydrophones for improved signal processing. This upgrade enables spatial diversity combining, helping maintain reliable communication links in challenging environments while extending effective range. It also unlocks advanced functions such as localization and high-fidelity acoustic monitoring. For research users, the additional channels provide access to raw multi-channel data, making the modem a suitable platform for developing custom navigation and tracking algorithms for AUVs.

Learn how multi-receiver modems enable robust links and novel research use cases here.

Specifications

Feature	Details
Receive channels	1, 2
Supported configurations	Standalone Configuration (SC), Open Configuration (OC)
Waveform streaming	Supported (all receivers)
Programmable gain	36 dB

Features

Enhanced communication performance

Uses spatial diversity combining to maintain strong and reliable links in challenging acoustic environments.

Research-ready signal access for underwater communication and localization research

Provides access to raw, multi-channel acoustic data streams, offering an ideal platform for researchers developing custom communication (SIMO), navigation, tracking, and signal-processing algorithms for AUVs.