6.3 Meter Compact Cassegrain Antenna

The Strength to Perform

The General Dynamics SATCOM Technologies 6.3-meter antenna delivers exceptional performance for transmit/receive and receive-only applications for C through Ku-band frequencies. This antenna offers a deep dish reflector that incorporates precision-formed panels, contoured radials and hub assembly. It features an innovative feed and subreflector design which results in high gain, low noise temperature, high antenna efficiency and excellent rejection of noise and microwave interference.

The aluminum reflector is supported by a galvanized kingpost pedestal that provides the required stiffness for pointing and tracking accuracy. The pedestals are designed for full orbital arc coverage and are readily adaptable to ground or rooftop installations. The electrical performance is compliant with ITU and FCC sidelobe specifications. Type Approved configurations are available for Intelsat (F2, E2), Asiasat, Hispasat or Singapore Telecom. All configurations meet SATCOM Technologies’ own type approved quality assurance and performance guarantee.

Features

  • ‘Type-Approved,’ bolt-together
  • 3.4 to 18.4 GHz operation, meeting ITU and FCC
  • Aluminum reflector, galvanized pedestal
  • 125 mph (200 km/h) wind survival
  • High-wind option

Options

  • C, X, Ku and DBS-band feed configurations
  • C/Ku receive-only feed systems
  • Improved feed cross-pol performance
  • Specialized feed systems (e.g., extended, multi-band)
  • CP/LP manual or remote switchable feeds
  • Antenna control system with tracking
  • Reflector and feed deicing systems
  • Environmental hub configurations
  • Integrated transmit cross-axis kits
  • Integrated LNA or LNB systems
  • HPAs, converters and M&C systems
  • Load frame mounts
  • Packing for sea and air transport
  • Turnkey installation and testing

Upgrades

  • X-band low PIM reflector/feed configurations
  • Extended azimuth travel
  • High wind configuration
  • Low operating temperatures
  • High power configurations
  • For Ka-band see separate datasheet

Specifications

C-Band 4-Port Circular Polarized
C-Band 4-Port Circular Polarized (5)
X-Band 2-Port Circular Polarized
Ku-Band 4-Port Linear Polarized (5)
DBS-Band 4-Port Linear Polarized
Electrical (1) Receive Transmit Receive Transmit Receive Transmit Receive Transmit Receive Transmit
Frequency (GHz)
3.625 -
4.200
5.850 -
6.425
3.625-
4.200
5.850-
6.425
7.250 -
7.750
7.900 -
8.400
10.700 -
12.750
13.750 -
14.500
10.700 -
12.750
13.750 -
14.500
Antenna Gain, Midband dBi (2) 46.54 50.70 46.30 50.20 52.00 52.60
55.70 57.50 55.40 59.40
VSWR 1.25:1  1.25:1  1.25:1  1.25:1  1.25:1  1.25:1  1.30:1  1.30:1  1.30:1  1.30:1
Pattern Beamwidth (2)
-3 dB, at midband

0.81°

0.50°

0.82°

0.52°

0.41°

0.38°

0.26°

0.22°

.028°

0.17°
Antenna Noise Temperature (K)
5° Elevation
10° Elevation
20° Elevation
40° Elevation

49
40
34
32

51
42
37
34
 
63
53
46
43
 
87
74
66
61
 
78
64
55
50
 
Typical G/T (dB/K) (3)
28.4
(4.000 GHz, 30 K LNA)
28.1
(4.000 GHz, 30 K LNA)
  32.4
(7.500 GHz, 45 K LNA)
  34.4
(11.725 GHz, 70 K LNA)
  34.4
(11.725 GHz, 70 K LNA)
 
Axial Ratio (dB)  0.51  0.51      1.50  1.50        
Power Handling (total)    10 kW CW    10 kW CW    5 kW CW    2 kW CW    2 kW CW
Cross Polarization Isolation (dB)
On Axis
Within 1.0 dB beamwidth

30.7
30.7

30.7
30.7

35.0
35.0

35.0
30.0

21.3
21.3

21.3
21.3

35.0
35.0

35.0
35.0

35.0
35.0

35.0
30.0
Port to Port Isolation (dB)
- Rx/Tx (Rx frequency)
- Tx/Rx (Tx frequency)
RF Specification

0
-85
975-2121

-70
0
975-2121

0
-85
975-2354

-50
0
975-2354

0
-110
975-2342

-110
0
975-2342

0
-85
975-3143

-50
0
975-3143

0
-85
975-2682

-75
0
975-2682
Sidelobe Performance  ITU-RS-580, FCC (4)
ITU-RS-580
  ITU-RS-580, FCC  ITU-RS-580

 

Mechanical/Environmental (5) Kingpost Pedestal (KX120) Kingpost Pedestal (KX200) High Wind Kingpost Pedestal (KX-HW)
Antenna Diameter 6.3 meters (20.83 feet)
Antenna Type Compact Cassegrain design
Reflector Construction 20 precision-formed aluminum panels with heat-diffusing white paint
Cleaned and brightened aluminum back-up structure
Hub Dimensions 60 in (152 cm) OD, 36 in (91 cm) depth
Mount Configuration Elevation over azimuth pedestal, constructed of galvanized A36 steel
Drive Type
Azimuth Travel
Elevation Travel
Manual struts
120° continuous
0 to 90° continuous
Manual jack screws
200° (2 segments @ 120°)
0 to 90° continuous
Manual jack screws
200° (2 segments @ 120°)
0 to 90° continuous
Foundation (L x W x D)
Concrete
Reinforcing Steel
17 x 17 x 1.5 ft (5.2 x 5.2 x 0.46 m)
16.1 yds³ (12.7 m³)
2,785 lbs. (1,263 kg)
16.5 x 16.5 x 2.5 ft (5.0 x 5.0 x 0.61 m)
20.2 yds³ (15.5 m³)
1,980 lbs. (900 kg)
Shipping Containers One 40 ft standard
Operational Wind Loading
Survival Wind Loading
- Any position
- At Zenith
45 mph (72 km/h) gusting to 60 mph (97 km/h)

125 mph (200 km/h) @ 58° F (15° C)
n/a
Up to 62 mph (100 km/h)

125 mph (200 km/h) @ 58° F (15° C)
180 mph (290 km/h) @ 58° F (15° C)
Operational Temperature
Survival Temperature
+5° to +122° F (-15° to +50° C)
-22° to +140° F (-30° to +60° C), low temperature options available
Rain Up to 4 in/h (10 cm/h)
Relative Humidity 0 to 100% with condensation
Solar Radiation 360 BTU/h/ft² (1,000 Kcal/h/m²)
Ice (survival) 1 in (2.5 cm) on all surfaces or 1/2 in (1.3 cm) on all surfaces with 80 mph (130 km/h) wind gusts
Atmospheric Conditions As encountered in coastal regions and/or heavily industrialized areas
Shock and Vibration As encountered during shipment by airplane, ship or truck
  • Features

    The aluminum reflector is supported by a galvanized kingpost pedestal that provides the required stiffness for pointing and tracking accuracy. The pedestals are designed for full orbital arc coverage and are readily adaptable to ground or rooftop installations. The electrical performance is compliant with ITU and FCC sidelobe specifications. Type Approved configurations are available for Intelsat (F2, E2), Asiasat, Hispasat or Singapore Telecom. All configurations meet SATCOM Technologies’ own type approved quality assurance and performance guarantee.

    Features

    • ‘Type-Approved,’ bolt-together
    • 3.4 to 18.4 GHz operation, meeting ITU and FCC
    • Aluminum reflector, galvanized pedestal
    • 125 mph (200 km/h) wind survival
    • High-wind option

    Options

    • C, X, Ku and DBS-band feed configurations
    • C/Ku receive-only feed systems
    • Improved feed cross-pol performance
    • Specialized feed systems (e.g., extended, multi-band)
    • CP/LP manual or remote switchable feeds
    • Antenna control system with tracking
    • Reflector and feed deicing systems
    • Environmental hub configurations
    • Integrated transmit cross-axis kits
    • Integrated LNA or LNB systems
    • HPAs, converters and M&C systems
    • Load frame mounts
    • Packing for sea and air transport
    • Turnkey installation and testing

    Upgrades

    • X-band low PIM reflector/feed configurations
    • Extended azimuth travel
    • High wind configuration
    • Low operating temperatures
    • High power configurations
    • For Ka-band see separate datasheet
  • Specifications

    Specifications

    C-Band 4-Port Circular Polarized
    C-Band 4-Port Circular Polarized (5)
    X-Band 2-Port Circular Polarized
    Ku-Band 4-Port Linear Polarized (5)
    DBS-Band 4-Port Linear Polarized
    Electrical (1) Receive Transmit Receive Transmit Receive Transmit Receive Transmit Receive Transmit
    Frequency (GHz)
    3.625 -
    4.200
    5.850 -
    6.425
    3.625-
    4.200
    5.850-
    6.425
    7.250 -
    7.750
    7.900 -
    8.400
    10.700 -
    12.750
    13.750 -
    14.500
    10.700 -
    12.750
    13.750 -
    14.500
    Antenna Gain, Midband dBi (2) 46.54 50.70 46.30 50.20 52.00 52.60
    55.70 57.50 55.40 59.40
    VSWR 1.25:1  1.25:1  1.25:1  1.25:1  1.25:1  1.25:1  1.30:1  1.30:1  1.30:1  1.30:1
    Pattern Beamwidth (2)
    -3 dB, at midband

    0.81°

    0.50°

    0.82°

    0.52°

    0.41°

    0.38°

    0.26°

    0.22°

    .028°

    0.17°
    Antenna Noise Temperature (K)
    5° Elevation
    10° Elevation
    20° Elevation
    40° Elevation

    49
    40
    34
    32

    51
    42
    37
    34
     
    63
    53
    46
    43
     
    87
    74
    66
    61
     
    78
    64
    55
    50
     
    Typical G/T (dB/K) (3)
    28.4
    (4.000 GHz, 30 K LNA)
    28.1
    (4.000 GHz, 30 K LNA)
      32.4
    (7.500 GHz, 45 K LNA)
      34.4
    (11.725 GHz, 70 K LNA)
      34.4
    (11.725 GHz, 70 K LNA)
     
    Axial Ratio (dB)  0.51  0.51      1.50  1.50        
    Power Handling (total)    10 kW CW    10 kW CW    5 kW CW    2 kW CW    2 kW CW
    Cross Polarization Isolation (dB)
    On Axis
    Within 1.0 dB beamwidth

    30.7
    30.7

    30.7
    30.7

    35.0
    35.0

    35.0
    30.0

    21.3
    21.3

    21.3
    21.3

    35.0
    35.0

    35.0
    35.0

    35.0
    35.0

    35.0
    30.0
    Port to Port Isolation (dB)
    - Rx/Tx (Rx frequency)
    - Tx/Rx (Tx frequency)
    RF Specification

    0
    -85
    975-2121

    -70
    0
    975-2121

    0
    -85
    975-2354

    -50
    0
    975-2354

    0
    -110
    975-2342

    -110
    0
    975-2342

    0
    -85
    975-3143

    -50
    0
    975-3143

    0
    -85
    975-2682

    -75
    0
    975-2682
    Sidelobe Performance  ITU-RS-580, FCC (4)
    ITU-RS-580
      ITU-RS-580, FCC  ITU-RS-580

     

    Mechanical/Environmental (5) Kingpost Pedestal (KX120) Kingpost Pedestal (KX200) High Wind Kingpost Pedestal (KX-HW)
    Antenna Diameter 6.3 meters (20.83 feet)
    Antenna Type Compact Cassegrain design
    Reflector Construction 20 precision-formed aluminum panels with heat-diffusing white paint
    Cleaned and brightened aluminum back-up structure
    Hub Dimensions 60 in (152 cm) OD, 36 in (91 cm) depth
    Mount Configuration Elevation over azimuth pedestal, constructed of galvanized A36 steel
    Drive Type
    Azimuth Travel
    Elevation Travel
    Manual struts
    120° continuous
    0 to 90° continuous
    Manual jack screws
    200° (2 segments @ 120°)
    0 to 90° continuous
    Manual jack screws
    200° (2 segments @ 120°)
    0 to 90° continuous
    Foundation (L x W x D)
    Concrete
    Reinforcing Steel
    17 x 17 x 1.5 ft (5.2 x 5.2 x 0.46 m)
    16.1 yds³ (12.7 m³)
    2,785 lbs. (1,263 kg)
    16.5 x 16.5 x 2.5 ft (5.0 x 5.0 x 0.61 m)
    20.2 yds³ (15.5 m³)
    1,980 lbs. (900 kg)
    Shipping Containers One 40 ft standard
    Operational Wind Loading
    Survival Wind Loading
    - Any position
    - At Zenith
    45 mph (72 km/h) gusting to 60 mph (97 km/h)

    125 mph (200 km/h) @ 58° F (15° C)
    n/a
    Up to 62 mph (100 km/h)

    125 mph (200 km/h) @ 58° F (15° C)
    180 mph (290 km/h) @ 58° F (15° C)
    Operational Temperature
    Survival Temperature
    +5° to +122° F (-15° to +50° C)
    -22° to +140° F (-30° to +60° C), low temperature options available
    Rain Up to 4 in/h (10 cm/h)
    Relative Humidity 0 to 100% with condensation
    Solar Radiation 360 BTU/h/ft² (1,000 Kcal/h/m²)
    Ice (survival) 1 in (2.5 cm) on all surfaces or 1/2 in (1.3 cm) on all surfaces with 80 mph (130 km/h) wind gusts
    Atmospheric Conditions As encountered in coastal regions and/or heavily industrialized areas
    Shock and Vibration As encountered during shipment by airplane, ship or truck
  • Literature

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