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Saint Pierre et Miquelon airport radome
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Radome interior view of antennas ILS
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RADOME FOR ILS (INSTRUMENT LANDING SYSTEM)
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After European consultation, under control of the French Air Traffic Technical
Services, manufacture of radomes was entrusted to the "Fibres de Berre"
company in Marseille in south of France, to protect the antennas and reflectors
assembly on airports from the harsh meteorological conditions : wind, snow,
seaside, reactor flow from jet. For the same reasons, the distribution and
recombination circuits normally placed behind the network are placed into
the radome housing the electronics.
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The two first radomes entered service in St Pierre et Miquelon in 1993 and
1996. The localizer electronic was a Thomson ILS 381 dual frequency,
redundant, ALC 101 double power of 25 planar antennas proved necessary,
owing to the short 1250 m runway, hangars on one side and high ground
on the other part.
The assembly has a span of 58 m, a width of 3.60 m and a height of 2.90 m.
It is designed to withstand the extreme conditions prevailing on St Pierre:
windspeeds 200 km/h, snow 90 cm, temperature -15°C. It comprises panels,
made of fiberglass and polyester resin. An access door is installed at each end,
with comfortable clearance in front of the antennas and behind the reflector.
This type of "all sheltered" localizer installation is improving the stability of
parameters with easier maintenance in all weathers, thus improving security.
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"Fibres de Berre" company has
installed one radome in Marseille
airport, to protect antennas against
sea and "misral" north windspeeds
of 150 km/h and gaz flow from jet,
and for the same reasons, will
manufacture two other one on Nice
airport in 1998.
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Radar Station Fibres de Berre" company
also "sheltered" tenth radar stations,
witch the highest is 40 meters in Limoge.
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Grasse radar station in south of France
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Station radar de Limoges radar station |
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