Satlink FB250 Manual De Usuario página 118

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FB250 FleetBroadband ADU (Above Deck Unit)
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FB250 FleetBroadband BDU (Below Deck Unit)
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The Primary Handset
FB250 FleetBroadband ADU (Above Deck Unit)
The FB250 ADU is a medium size, maritime FleetBroadband Class
9, 3-axis marine antenna.
The antenna is self-tracking based on patented beam squint tech-
nology. The simple and robust electromechanical system, with one
motor per free axis, provides full coverage in azimuth and elevation.
Tracking is accomplished by measuring signals being continuously
broadcast from the satellite.
The antenna unit includes LNA (low noise amplifier), HPA (high
power amplifier) and tracking receiver circuitry to ensure communica-
tion even in adverse circumstances.
The radome covers the antenna equipments, which is composed of:
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Antenna Unit
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RF and GPS circuit
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Rotary joint
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Antenna pedestal
All signals (and power) pass through a single coaxial cable, which
connects the ADU to the BDU.
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