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General Dynamics SATCOM Technologies 13.1M Cassegrain Antenna

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  • Aluminum reflector panels
  • Designed for 1.5 to 18 GHz operation
  • Galvanized steel backup structure
  • Survives 125 mph winds


SKU: SATRES-6358

Mechanical
Azimuth Travel 180° (in three 70° overlapping segments)
Azimuth Travel Rate 0.06°/second
Elevation Travel0° to 90° continuous
Elevation Travel Rate0.03°/second
Polarization Travel±95° (2-Port),±50°(4-Port)
Polarization Travel Rate1.0°/second
Weight - Reflector17,000 pounds (7,711 kg)
Weight - Pedestal15,400 pounds (6,985 kg)
Shipping Weight (Typical)48,507 pounds (22,003 kg)
Shipping Volume6,664 cubic feet (189 m3
Reflector StructureSteel
Pedestal StructureSteel
Reflector SurfaceAluminum panels with heat-diffusing white paint
PedestalHot-dip galvanized
Surface Accuracy0.018 inch (static) Ku-Band

0.025 inch (static) C-Band
Foundation Size 30 ft x 30 ft x 2 ft (9.1 m x 9.1 m x 0.6 m)
Concrete Volume67 cubic yards (511.26 m3)
Reinforcing Steel7,500 pounds (3,402 kg)
Soil Bearing Pressure3,000 PSF (15,000 kg/m2)
Environmental
Operational Winds 45 mph (72 km/h): gusts to 60 mph (97 km/h)
Survival Winds (Any Position)125 mph (200kp/h)@58°F (15°C)
Ambient TemperatureOperational:+5° to 122°F(-15° to +50°C)

Survival: -22° to +140°F (-30° to +60°C)

Low temperature kits available
Rain(operational/survival)Up to 4 in/h (10 cm/h)
Relative Humidity (operational and survival)0% to 100% with condensation
Solar Radiation360 BTU/h/ft2 (1000 Kcal/h/m2)
Radial Ice (Survival)1 inch (2.5 cm) on all surfaces or 0.5 inch (1.3cm) on all surfaces with 80 mph (130 km/h) wind gusts
Shock and VibrationAs encountered during shipment by commercial air, sea, or land
Corrosive AtmosphereAs encountered in coastal regions and/or heavily industrialized areas.
Seismic (survival)0.3 G's horizontal

0.1 G's vertical
Electrical - C-Band 4 Port Circular Polarized
Frequency (GHz)

    Receive

    Transmit


3.625 - 4.200

5.850 - 6.425
Antenna Gain at midband, dBi

    Receive

    Transmit


53.4

57.2
Antenna Noise Temperature

    5° Elevation

    10° Elevation

    20° Elevation

    40° Elevation


52° K

43° K

37° K

35° K
Typical G/T at 4.0 or 11.850 GHz 20° Elevation, Clear Horizon

C-Band 30 K LNA




35.0 dB/k
Pattern Beamwidth at midband

    -3 dB

      Receive

      Transmit

    -15 dB

      Receive

      Transmit




0.37

0.25



0.78

0.53
Sidelobe Performance

First Sidelobe Level Across the Band

Meets FCC 25.209, Eutelsat, or ITU-RS

Recommendation 580 Sidelobe Specification


-15 + 2 dB
Cross Pol Isolation

    On Axis

    within 1 dB Beamwidth
Rx/Tx

30.7 dB/30.7 dB

30.7 dB/30.7 dB
VSWR Performance

    Receive:

    Transmit


1.25:1

1.25:1
Feed Insertion Loss

    Receive:

    Transmit


0.25 dB

0.20 dB
Port to Port Isolation

    Rx/Tx(Rx Freq)

      Receive:

      Transmit:

    Tx/Rx (Tx Freq)

      Receive:

      Transmit:

    Rx/Rx, Tx/Tx (Same Band)

      Receive:

      Transmit:




0 dB

-30 dB



-30 dB

0 dB



21 dB

23 dB
Axial Ratio

    Receive:

    Transmit:


0.50 dB

0.50 dB
Waveguide Interface Flange

    Receive:

    Transmit:


CPR-229 G

CPR-159 G
Total Power Handling Capability

    Transmit


10 kW CW
RF Specification975-1065
Electrical - C-Band 4 Port Linear Polarized
Frequency (GHz)

    Receive:

    Transmit:


3.625 - 4.200

5.850 - 6.425
Antenna Gain at midband, dBi

    Receive

    Transmit


53.4

57.2
Antenna Noise Temperature

    5° Elevation

    10° Elevation

    20° Elevation

    40° Elevation


50° K

40° K

35° K

32° K
Typical G/T at 4.0 or 11.850 GHz 20° Elevation, Clear Horizon

C-Band 30 K LNA




35.1 dB/k
Pattern Beamwidth at midband

    -3 dB

      Receive

      Transmit

    -15 dB

      Receive

      Transmit




0.37

0.25



0.78

0.51
Sidelobe Performance

First Sidelobe Level Across the Band

Meets FCC 25.209, Eutelsat, or ITU-RS

Recommendation 580 Sidelobe Specification


-15 + 2 dB
Cross Pol Isolation

    On Axis

    within 1 dB Beamwidth
Rx/Tx

35.0 dB/35.0 dB

30.0 dB/30.0 dB
VSWR Performance

    Receive:

    Transmit


1.25:1

1.25:1
Feed Insertion Loss

    Receive:

    Transmit


0.25 dB

0.20 dB
Port to Port Isolation

    Rx/Tx(Rx Freq)

      Receive:

      Transmit:

    Tx/Rx (Tx Freq)

      Receive:

      Transmit:

    Rx/Rx, Tx/Tx (Same Band)

      Receive:

      Transmit:




0 dB

-30 dB



-30 dB

0 dB



30 dB

30 dB
Waveguide Interface Flange

    Receive:

    Transmit:


CPR-229 G

CPR-159 G
Total Power Handling Capability

    Transmit


10 kW CW
RF Specification975-1271

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