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The navtec GmbH has developed
a portable emergency transmitter beacon (EPIRB)
using the geo-stationary Inmarsat satellites.
to low-orbiting satellites, the geo-stationary system provides for fast
and reliable emergency indication. The technical specification
of the navtec emergency transmitter meets or even exeeds all of the mandatory
standards and regulations of ETSI and IEC as well as of IMO
and Inmarsat. The navtec global-3 EPIRB
is fully type approved and can be used on any vessel. Click here for a
link to our distributors.
The navtec EPIRB is a lightweight,
emergency transmitter for aeronautical and maritime
use. It operates in conjunction with the geo-stationary Inmarsat satellites
and guarantees rapid transmission of position information in the event
of an accident. Four satellites cover about 97 % of the earth's surface.
Only one satellite is required for satisfactory operation and three of
the four satellites can be reached from Europe at any time. This guarantees
that the distress call is forwarded without delay and minimizes the probability
of data loss during transmission. A remote control unit (RCU)
is available for download from our web site.
Click here to see how
an EPIRB works, compare the different
ELT- and EPIRB-systems and see what to do in case of a false
||The navtec EPIRB global-3 can be used
as a stand-alone unit without a cradle. In this case only a manual activation
||The picture shows the switch and its protection
against unintended use.
||The cradle with the hydrostatic release
mechanism can be purchased together with the beacon or later if needed.
||The navtec EPIRB global-3 can be fitted
with an optional Remote Control Unit (RCU). Using the RCU the type of emergency
can be specified. The RCU outputs GPS position on its display and its NMEA
output. Click on the photo to get an enlarged view (30 kByte).
||Download a 21 second video-clip
from our download page
and see worldwide for the first time, how an EPIRB (global-3) is released
in 4m depth using the hydrostatic release unit.
: Ingo Wenske, Berlin
Also integrated in the navtec EPIRB is
a beacon option at a frequency of 121,5 MHz (formerly ELT) which assists
in the search close to the vicinity of the accident .
In the maritime version the navtec
EPIRB comes as a floating buoy. In case of an accident it automatically
ejects from its cradle, surfaces and transmits a distress signal. The navtec
EPIRB can also be activated by remote control from a ship's bridge. Furthermore,
it can be taken along as a separate unit and activated manually.
In the event of an emergency, the navtec
EPIRB automatically transmits data via the satellites to the base stations.
This data contains the unique EPIRBs system code ()serial number), the
nature of distress, the last position with the actual time as well as the
direction in which the vehicle is moving and its speed. An elaborate CRC
defect protection guarantees transmission and decoding even in case of
disturbances on the transmission path. Tests have shown that all base stations
can receive the signals even with only 100 mW transmission power (1/10
of the nominal transmission power).
Technical Data of the
navtec 1,6-GHz EPIRB
to get to the Inmarsat-E system description, back
to product description or to abbreviations)
|Inmarsat type approval number
SOLAS / GMDSS type approval number
0735-00 (wheelmark sign)
|housing measures (in
mm), see figure
||220 high x 210 (diameter)
||< 1200 g
|maintenance interval/change of battery
||4 years (IMO regulation)
|maintenance interval of the water pressure
ejection in the holder
||2 years (IMO regulation)
automatically in case of ship's emergency
remote controlled from a ship's bridge
|ejection level (depth)
||1,5 to 4m
||667 channels, 300 Hz spacing from 1,645
|type of modulation
|transmission power at the antenna, EPIRB
||30 dBm = 1 W
|secondary frequency, optional beacon (ELT)
|type of modulation
||AM / A9 / LF sweep
|transmission power, beacon
||17 dBm = 50 mW
||< 50 ppm
||red, ca. 2 cd,
ca. 30 flashes/min.
increased flash rate during transmission
||2g to 50 Hz, all axes
||253 ... 328 K (-20 to +55 oC)
||self test with checking of all functions
|period of transmission after triggering
|range, operational range
||world-wide, except polar caps, 97% of
|position finding, acquisition time
||GPS-RX, 12-channel, cold start 40-100
|period of time between triggering and
As of Feb 1999,
data to be changed without further notice
(in mm) :