UC&NL products documentation

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RedPhone-D
Underwater telephone. Diver’s unit
Device specification

KEY FEATURES

DESCRIPTION

Diver’s underwater wireless telephone communication unit RedPhone-D provides voice messaging between divers and/or from a diver to a surface station. The device supports standard frequency bands and is compatible with most similar systems. The built-in pinger function of the navigation system RWLT allows the user to determine the geographic position of the diver after he completes voice transmission. RedButton that does not contain corrodable elements is used as a Push-To-Talk button.

TECHNICAL SPECIFICATIONS

PARAMETER VALUE
DIMENSIONS3 203 x 105 x 45 mm
WEIGHT4 (dry) 1.55 kg
MAX. DEPTH 70 m
MAX. OPERATING RANGE2 1000 m
ACOUSTIC SOURCE LEVEL 150 dB re 1 uPa @ 1 m
VOICE BANDWIDTH5 300 .. 4300 Hz
NUMBER OF SUPPORTED CHANNELS 8
BATTERY LIFE (RX MODE)6 up to 80 hours
BATTERY LIFE (MIXED MODE)6, 7 up to 5 hours
BATTERY LIFE (MIXED MODE)6, 8 up to 2.5 hours
WORKING TEMPERATURE RANGE 0 .. 50° С
BATTERIES 3 x 18650 Li-Ion
CHANNEL SWITCHING DIP-switch in the battery compartment
BODY MATERIAL Delrin
CABLES INSULATION MATERIAL Polyurethane
NAVIGATION SIGNAL CARRIER 20050 Hz
NAVIGATION SIGNAL MODULATION TYPE BPSK
NAVIGATION SIGNAL DURATION 200 msec

CHANNELS AND FREQUENCY BANDS

CHANNEL NUMBER CARRIER, Hz SIDE BAND BANDWIDTH, Hz
1 32768 Low 28468 .. 32468
2 32768 High 33068 .. 37068
3 31250 Low 26950 .. 30950
4 31250 High 31550 .. 35550
5 28500 Low 24200 .. 28200
6 28500 High 28800 .. 32800
7 25000 Low 20700 .. 24700
8 25000 High 25300 .. 29300

1 The function is provided by buoys of the RWLT navigation system.
2 A parameter that determines the maximum range at which a signal can be received based on the electro-acoustic parameters of the transmitter and receiver, spatial decrease in the intensity of sound energy, attenuation in the medium and level of acoustic noise.
3 Including transducer.
4 With a battery, a PTT and a mask connector, deepending on the specific connector, the value may differ by the weight of the connector.
5 The actual audible frequency range depends on the headset used.
6 With new, fully charged batteries with a capacity of 3000 mA*h or more, at an ambient temperature of 20 °C.
7 While transmitting 2 minutes per 10 minutes.
8 While transmitting 5 minutes per 10 minutes.