Aluminium DCU
The RT-202 DCU is optional avaliable in a Aluminium version. The interchangeable mounting brackets allow the recessed mounting in a front panel or a control station.
RT-202 Crewfinder CrewFinder MOB Direction Finder System
Like the RT-100 emergency receiver, the RT-202 CrewFinder MOB direction finder system monitors the international emergency frequency 121.500 MHz and triggers an alarm in the event a distress signal is received. At the same time, the direction of the transmitter is determined and indicated by a LED ring.
The RT-202 also features a second operating frequency (121.650 MHz) for training and testing purposes.
In the event of a man overboard situation, the individual in distress can be found quickly and easily in each environmental condition.
Special Features
• Simple intuitive operation
• Extremely high reception sensitivity to permit detection of extremely weak or distant signals
• Special processing algorithm for signal stable localization
• Selective Squelch to avoid false alarms
• Waterproof (IP67) and robust
• Extremely compact design
• RS-232 interface for remote control capability
Technical Data
|
Method of bearing |
Doppler-principle (3 kHz frequency of rotation) |
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Bearing accuracy |
≤ 5° (RMS) |
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Internal resolution |
2° |
|
Bearing sensitivity |
≤ 1 µV/m typical at ±5° bearing fluctuation |
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Frequency range |
121.500 MHz + 121.650 MHz |
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Bearable modulation types |
A3E, F3E, A2X (Distress-modulation), bearing largely independent of modulation |
|
Polarisation |
vertical |
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Polarisation error |
≤ 5° at 60° field vector rotation |
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Time of response |
≤ 50 ms (with sufficient receiving field strength) |
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Operating voltage |
11V to 24V DC |
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Current consumption |
max. 350 mA (without external speaker)
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Audio |
with inbuilt miniature speaker; modulation: A3E |
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Data interface |
Remote Control: RS232 (V24)
|
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Audio output |
for external speaker (on GND) app. 5 Vpp on 8 Ohm,
|
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Alarm output |
Open collector output to GND with receiving signal / alarm:
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Temperature range |
DCU: -20°C to +60°C
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Weight |
Display Control Unit: app. 600 g
|
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Dimensions |
Display: ( length x width x height ): 120 mm x 100 mm x 55 mm
|
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Protective systems |
Display Control Unit: IP 67 Antenna: IP 67 |
|
Later due trust wind |
27 N at 150 km/h wind speed
|
|
Display resolution |
10° |
Accessories
DC/DC Converter
The DC/DC converter prevents damage to the direction finding system due to compensation current which flows across the System Ground to minus voltage supply e.g. generated when starting the engines. Mandatory for vessles with metal hull.
Images
Applications
Search and Rescue (SAR)
Man over Board (MOB)
Offshore
