RedPhone-DX – diver's telephone unit
RedPhone-DX
A modern diver's telephone station built using the latest technical solutions. Besides two-way voice communication, the station determines the diver's position underwater (using RWLT buoys as the navigation base)
Purpose
RedPhone-DX is a wearable underwater voice communication station. It carries voice messages between divers and from a diver to the surface dive-control point, where a RedPhone-OS station or another diver communication unit with the same signal parameters is used. Communication is half-duplex: transmission and reception alternate. The station uses the frequency channels standard for diver communication (eight in total), so it is compatible with most comparable systems, such as OTS and Ocean Reef.
Use
The station is best strapped to the cylinder on the diver's back with a strap or rubber cord. For reliable communication the users' acoustic antennas must have line of sight. The uPress button, which has no corrosive parts, can serve as the push-to-talk switch. The RedPhone DX Config application sets the channel number, RWLT compatibility mode, diver address, voice-activity-detector sensitivity and alert volume.
Compatibility and system composition
RedPhone-DX is part of the RedPhone system, together with the RedPhone-OS surface station and a headset. In the RWLT navigation system the station acts as a pinger: the diver's position is determined from the signal it emits right after the push-to-talk switch is released. This requires a navigation base of four RWLT GIB buoys; the uTrackDiver application shows the positions of up to 255 divers.
Documentation
Operation, charging and configuration are described in the RedPhone-DX user manual; pairing with your own software is covered by the protocol description (available in Russian).
- Autonomous operation of up to 8 hours (mixed mode) / up to 20 hours (receive only)
- Compatible with most analogous systems (OTS, Ocean Reef, etc.)
- Compact: 106×95×55 mm, weight 0.6 kg
- Built-in voice activity detector
- Acoustic communication range of up to 1000 m
- Built-in diver location function
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Documentation
An extremely reliable solution
The device has no openable parts that could leak: there is no way to forget to latch the housing, damage a switch, or fail to tighten a connector — our device simply has none of these. Battery charging and device configuration are performed wirelessly.
The simplest possible control
RedPhone switches on automatically when immersed and operates in Push-to-Talk (PTT) mode — reception runs continuously, while transmission is active only while the RedButton is pressed. After each voice message, the station transmits a navigation signal that determines the diver's position underwater.
High-quality acoustic communication and accurate object positioning
We apply broadband hydroacoustic communication technology and digital signal processing across all of our systems. This provides reliable protection against interference even in poor conditions (for example, in shallow water), and enables features unavailable in other systems — in particular, underwater diver positioning.
Part of the system
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