Underwater telephone. Diver’s unit
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.
|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|
|CABLES INSULATION MATERIAL||Polyurethane|
|NAVIGATION SIGNAL CARRIER||20050 Hz|
|NAVIGATION SIGNAL MODULATION TYPE||BPSK|
|NAVIGATION SIGNAL DURATION||200 msec|
|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.