Main ❯ Underwater Wireless voice systems (Underwater telephone) ❯ ❯ User’s manual: RedPhone-DX
Wireless telephone for divers
The diving station of voice hydroacoustic communication RedPhone-DX (hereinafter referred to as the station) is intended for:
The general view of the RedPhone-DX station is shown in Figure 1.
|Fig 1 - RedPhone-DX: General view|
The device is made in the form of a maintenance-free polyurethane monoblock, with built-in LiFePO4 batteries that provide more than 3000 charge-discharge cycles. On the top of the device in its upper part are located:
Standard devices are equipped with a connector and a PTT for connecting a headset that does not contain a PTT.
Charging is carried out with a complete cradle (chassis) with a charger. Switching channels and the compatibility mode with the navigation tracking system RWLT is carried out using the built-in radio transceiver and the bundled USB radio dongle.
To ensure the best working conditions and communication quality, subscribers’ acoustic antennas must have a direct line of sight. The recommended mounting location for the device is on the tank on the diver’s back. Fastening should be carried out with a belt or rubber band through the fixing eyes. The cables must not restrict the diver’s movements. The PTT has a special loop for attaching to the suit.
The station uses single-sideband amplitude modulation (English SSB, Single side band) and supports the most commonly used bands in such systems, which ensures compatibility with almost all analogues. Table 1 shows the correspondence between station channel numbers and frequency bands.
|Channel number||Carrier, Hz||Side band||Bandwidth, Hz|
|1||32768||Lower||28468 .. 32468|
|2||32768||Upper||33068 .. 37068|
|3||31250||Lower||26950 .. 30950|
|4||31250||Upper||31550 .. 35550|
|5||28500||Lower||24200 .. 28200|
|6||28500||Upper||28800 .. 32800|
|7||25000||Lower||20700 .. 24700|
|8||25000||Upper||25300 .. 29300|
The general technical characteristics of the device are given in Table 2:
|DIMENSIONS1 (l х w х h)||203 x 105 x 45 mm|
|WEIGHT2 (dry)||0.6 kg|
|MAX. WORKING DEPTH||70 m|
|MAX. ACOUSTIC RANGE3||1000 m|
|MAX. ACOUSTIC PRESSURE||150 dB re 1 uPa @ 1 m|
|VOICE BANDWIDTH4||300 .. 4300 Hz|
|NUMBER OF CHANNELS||8|
|BATTERY LIFE IN RECEIVING MODE5||up to 50 hours|
|BATTERY LIFE IN MIXED MODE (20%)5,6||up to 8 hours|
|BATTERY LIFE IN MIXED MODE (50%)5,7||up 2.5 hours|
|WORKING TEMPERATURES||0 .. 50° С|
|BUILT-IN POWER SUPPLY||28 W*h, LiFePO4, up to 3000 charge-discharge cycles|
|CHANNEL SWITCHING||Wireless, using a USB-RF Dongle|
|CABLE INSULATION MATERIAL||Polyurethane|
|NAVIGATION SIGNAL CARRIER8||20050 Hz|
|NAVIGATION SIGNAL MODULATION8||BPSK|
|NAVIGATION SIGNAL DURATION8||200 msec|
1 Including hydroacoustic antenna.
2 With a PTT and mask connector, depending on the connector, the value may differ by the weight of the connector.
3 A parameter that determines the maximum range at which signal reception is possible, based on the electroacoustic parameters of the transmitter and receiver, the spatial decrease in the intensity of sound energy, attenuation in the medium and the level of hydroacoustic interference.
4 Actual frequency range depends on headset specifications.
5 With a new, fully charged battery, at an ambient temperature of 20°C.
6 In a mode 2 minutes transmit 8 minutes receive.
7 In a mode 5 minutes transmit 5 minutes receive.
8 The function is provided by buoys of the RWLT navigation system.
|1||RedPhone-DX with a headset connector||1 pcs.|
|2||Charger with the cradle||1 pcs.|
|3||USB-RF dongle for wireless connection to a PC||1 pcs.|
Figure 2 shows the scope of delivery
|Fig 2 - Contents of delivery|
|The numbers indicate: 1 - charger, 2 - charging chassis (cradle), 3 - PTT, 4 - connector, 5 - USB radio dongle, 6 - RedPhone-DX station|
The pinout of the connector in the standard version is shown in Table 4
Before immersing the device in water, the user must ensure that:
Before starting work, the user must:
Before work, all preparations and checks provided for in p. 2.1.
Diver’s hydroacoustic voice communication works on a half-duplex scheme: transmission and reception alternate, if the device is in transmit mode, it cannot receive incoming messages.
Possible sound alerts are summarized in Table 5.
|A short rising and then falling tone||The station turned on|
|A short rising tone||Switching to receive mode (when the navigation function is off)|
|A short falling tone (~ every 30 seconds)||Low battery|
To receive voice messages from divers, the PTT button on the headset must be released. In this case, incoming messages will be played by the headset.
The volume of the replayed incoming voice messages depends on the distance between the subscriber’s antennas, as well as on hydrological conditions. It can decrease when a diver enters the zone of acoustic shadow (when elements of the underwater landscape, parts of structures, vessels, algae, etc. are on the path of the signal).
To send voice messages, the following sequence of actions is performed:
Upon completion of the work, the diving station does not require any additional manipulations and turns off automatically when in the air. Before packing in a shipping container, it is necessary to rinse and/or desalinate in fresh water, followed by wiping with an absorbent cloth and air drying for at least 30 minutes.
The station does not need special storage conditions, except for the following:
- OPENING EQUIPMENT FROM THE DELIVERY SET ACCORDING TO p. 1.4.
- ACCESS TO USE OF EQUIPMENT FROM THE DELIVERY SET ACCORDING TO p. 1.4. PERSONS WHO ARE NOT FAMILIAR WITH THESE INSTRUCTIONS
- ACCESS TO USE OF EQUIPMENT FROM THE DELIVERY SET ACCORDING TO p. 1.4. PERSONS UNDER THE ADVANCED
Charging the built-in power supply of the station is allowed only with the supplied charger when the headset is disconnected. Before using the charger, read the instruction manual for the charger. To charge the device, you must install it in the charging cradle and connect the supplied charger to the household electrical network. The end of the charge is determined by the indicator of the complete mains charger. It is recommended to leave the device on charge for another 1-1.5 hours after the end of charging according to the indicator on the network adapter.
Charging chassis installation is shown in Figure 3:
|Fig 3 - Charging chassis installation|
Station can be configured:
To wirelessly connect the station to a PC, follow these steps:
Download the RedPhoneDXConfig utility (requires PC with Windows 8 or higher). The application does not require installation: just unzip the archive to a location convenient for you.
Disconnect the USB dongle from the PC if connected.
Run the application RedPhoneDXConfig.exe
In the RedPhone DX Dongle PORT combo box, pay attention to the ports already present:
Connect USB dongle to PC, wait a few seconds and click 🗘 (Update) button. In some cases, you may need to install a driver on the USB converter. The new port that appears in the list corresponds to the port of the dongle. It must be selected:
The wireless connection is established exclusively, which means that at one time the configuration work is carried out with only one device RedPhone-DX. Place the device to be configured up to 5 meters away from the USB dongle. To turn on telephony without immersing it in water: you can use a wet cloth by placing it on the contacts shown in the figure:
You can close the contacts with a metal object, provided that the connection is reliable: if the contact between the conductors is lost, the station will instantly turn off. You can also put the device in a container of water with the antenna down so that only the antenna and contacts are covered with water. Otherwise, water will interfere with radio communication.
In the app, press the CONNECTION button. If everything is done correctly, then the text field RedPhone DX Device Information will display information about the device:
The RedPhone DX Device settings field will display the current device settings:
After the wireless connection is established, in the RedPhone DX Device settings field, the user can set one of the communication channels supported by the station using the Channel input field.
Always make sure that all devices are set to the same channel when diving together!
The RWLT Pinger enabled checkbox controls the built-in diver tracking feature. When the tracking function is enabled, at the end of each voice transmission from a diver (after releasing the PTT), the station will transmitt a special navigation signal that is received by the buoys of the RWLT system, which allows to determine the geographical position of the diver .
The RWLT Diver’s ID input field specifies the diver’s address (identifier) to be displayed on the map.
When working with the RWLT system, it is very important to set different addresses for all diving stations, otherwise the locations of different divers with the same addresses will be displayed as a single track.
If you do not plan to use the tracking system RWLT be sure to uncheck RWLT Pinger enabled, this will save battery power and eliminate an additional pause after a voice transmission during which navigation signal is being transmitted.
The current version of the system does not use the RWLT Channel setting. Be sure to leave this field set to zero.
To save the settings to a station, press the APPLY SETTINGS button. Based on the results, a pop-up window will be displayed confirming the successful recording of new settings:
|Settings successfully updated|
If it doesn’t, check if the dongle and/or station has been disconnected and try again, make sure the station is not turned off or discharged. If the error persists, contact the developer.
The manufacturer’s warranty applies only to factory defects that were discovered during the operation of the device in accordance with this manual during the warranty period (2 years from the date of purchase).
The manufacturer guarantees free repair or replacement of faulty equipment from the equipment set that has failed due to a factory defect.
The reasons for refusing free warranty service, free repair and replacement include:
ANY OF THE PARTS OF THE EQUIPMENT SET ACCORDING TO par. 1.4. SEPARATELY AND IN THE COMPOSITION OF THE SYSTEM, NAME FURTHER “DELIVERED EQUIPMENT”:
- ARE NOT DESIGNED FOR WATER RESCUE USE
- NOT TESTED AS RESCUE EQUIPMENT
- NOT RESCUE EQUIPMENT
- THE MANUFACTURER DECLARES THAT THE DELIVERED EQUIPMENT IS SAFE WHEN OPERATING ACCORDING TO THESE INSTRUCTIONS AND IS NOT RESPONSIBLE FOR ANY CONSEQUENCES OF USE OF THE DELIVERED EQUIPMENT