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3.5 Meter VSAT Antenna

• Each integral spun-aluminum reflector is constructed for optimum reliability and measured for RMS surface accuracy

• 3.5m one-piece precision automated spinning

• Bonded and riveted torsion box for rigidity

• Heavy mounting ring for strength

• Advanced dual-reflector Gregorian optics

• Subreflector closed loop positioning or precise pointing accuracy

• High velocity feed window blower

Operating frequency band*

Ka-Band receive, GHz

Ka-Band transmit, GHz

 

19.7–20.2.

29.5–30.0

Gain, with CP4 combiner (dBi, ±0.2 dB)

Rx Freq.GHz      Rx Gain             Tx Freq., GHz                    Tx Gain

19.70 .            55.0                 29.50 .                         58.3

19.95             55.1                 29.75                          58.3

20.20             55.2                 30.00                          58.4

21.20             56.0                 43.5                           62.0

45.5                                   63.0

 

Polarization

Circular.

.VAR 1.09.

Polarization discrimination, dB .

Linear .

35

Feed system,

2, 3 or 4 port circular or linear

Corrugated high efficiency horn

400 Watts CW transmit power @ WC interface

85 dB TX/RX isolation

VSWR ≤1.30:1 at TX/RX combiner ports feed only 1.22

Antenna noise temperature,

under clear sky conditions, at 20°C, at RX 4 port combiner flange.

Elevation                                               Band, K

10°                                                       106

30°                                                        74

50°                                                        69

Pattern envelope

Compliant to ITU-R S.580, U.S. FCC 47 CFR 25.209

Mechanical Specifications

Optical design

Dual-reflector, symmetrical axis

Reflector material

Precision spinning, aluminum

Reflector segments

One piece

Mount

Hot dip galvanized pedestal

Subreflector actuators

Small AC servo drives

Environmental Specifications

Operating Temperature, F (C)

-40° to 125° (-40° to 52°)

Seismic,

1 G vertical and horizontal acceleration.

Richter 8.3 or Grade 11 on the modified Mercalli Scale

Wind loading

Survival, mph (km/h)

125 (200) in any position of

operation

Operational, mph

50 with TX loss of <0.5 dB