|RedPhone underwater telephone|
The RedPhone-OS Wireless underwater telephone provides voice transmission between the surface station and the divers. The device supports standard frequency bands and is compatible with most other systems. The device is made in a shockproof plastic case, the dashboard is made of high-grade 3 mm stainless steel with inscriptions applied by laser engraving. The built-in power supply consists of lithium-iron-phosphate batteries, which operate at low temperatures and more than 1000 charge-discharge cycles.
|DIMENSIONS (length х width х height)||259 x 202 x 115 mm|
|WIGHT (dry)||2 kg|
|MAX. OPERATING RANGE1||1000 m|
|ACOUSIC SOURCE LEVEL||160 dB re 1 μPa @ 1 m|
|TRANSDUCER’S CABLE LENGTH2||7 m|
|NUMBER OF SUPPORTED CHANNELS||8|
|VOICE BANDWIDTH3||300 .. 4300 Hz|
|BUILT-IN BATTERY||LiFePO4 60 W*h|
|BATTERY LIFE (RX MODE)4,5||up to 30 hours|
|BATTERY LIFE (20% TX, 80% RX)4,5,6||up to 24 hours|
|BATTERY LIFE (50% TX, 50% RX)4,5,7||up 12 hours|
|WORKING TEMPERATURE RANGE||-10 .. 50 °С|
|MICROPHONE||Handheld, with PTT|
|EXTERNAL HEADPHONES RESISTANCE (not less)||8 Ohm|
|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 A parameter that determines the maximum range at which a signal can be received, based on electro-acoustic parameters of the transmitter and receiver, spatial decrease in the intensity of sound energy, attenuation in the medium and the acoustic noise level.
2 By agreement, delivery with increased cable length is possible.
3 The actual audible frequency range depends on the headset used.
4 When playing on the built-in speaker, with a volume level of 40%.
5 With a fully charged, new battery. At an ambient temperature of 20 ° C.
6 In the mode, 2 minutes of transmission and 8 minutes of reception.
7 In the mode, 5 minutes of transmission and 5 minutes of reception.
8 With top cover closed