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3. MAIN UNITS

The FB250/500 FleetBroadband system include the following main units:

FB250

• FB250 FleetBroadband BDU

• FB250 FleetBroadband ADU

• Primary Handset

FB500

• FB500 FleetBroadband BDU

• FB500 FleetBroadband ADU

• Primary Handset

3.1 Above Deck Unit (ADU), the antenna unit

The FB series ADU is Maritime FleetBroadband 3-axis controlled antenna. The

antenna is self-tracking based on patented beam squint technology. 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 radome covers the antenna equipments, which is composed of:

• Antenna Unit (N-Type)

• RF and GPS circuit

• Rotary joint

• Antenna pedestal

The antenna unit includes LNA (low noise amplier), HPA (high power amplier)

and tracking receiver circuitry to ensure communication even in adverse circum-

stances.

All signals (and DC power) shall pass through a single coaxial antenna cable,

which connects the ADU to the BDU.

Intellian FB250 User Manual

Other manuals for Intellian FB250