The Strength to Perform

The General Dynamics SATCOM Technologies 7.3-meter antenna delivers exceptional performance for transmit/ receive and receive only applications for L through DBS-band frequencies. This antenna offers a reflector design that incorporates precision-formed panels, contoured radials and a machined hub assembly. It features an innovative Cassegrain feed and subreflector design which results in high gain, low noise temperature, high antenna efficiency and excellent rejection of noise and microwave interference.

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Product Details

A large center hub provides spacious accommodation for equipment mounting. The 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 FCC and ITU-RS-580 sidelobe specifications and Intelsat (F3, E3) and Eutelsat (L, S1) requirements. All configurations meet SATCOM Technologies’ own type-approved quality assurance and performance guarantee.

Features

  • Bolt-together, all-aluminum reflector with self-aligning, fully interchangeable components
  • Designed for 1.5 to 18 GHz operation, meeting FCC 25.209 and ITU-RS-580 regulations
  • Galvanized steel elevation-over-azimuth pedestal with jackscrews
  • Survives 125 mph winds in any position

Options

  • L, S, C, X, Ku and DBS-band feeds
  • C/Ku receive only feed systems
  • Specialized feed systems (e.g. extended, multi-band)
  • 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

  • Extended azimuth travel
  • Low operating temperatures
  • High power configurations

Specifications

C-Band 4-Port Circular Polarized
C-Band 4-Port Circular Polarized
Extended C-Band 4-Port Linear Polarized
Ku-Band 4-Port Linear Polarized
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
3.400 -
4.200
5.850 -
6.725
10.700 -
12.750
13.750 -
14.500
10.700 -
12.750
17.300 -
18.400
Antenna Gain, Midband dBi (2) 48.10 51.70 48.10 51.80 48.00 51.80
56.50 58.10 56.90 59.60
VSWR 1.25:1  1.25:1  1.25:1  1.25:1  1.30:1  1.30:1  1.30:1  1.30:1  1.30:1  1.30:1
Pattern Beamwidth (2)
-3 dB, at midband
-15 dB, at midband
0.67°
0.41°
0.45°
0.94°
0.67°
1.41°
0.44°
0.92°
0.67°
1.41°
0.43°
0.90°
0.23°
0.48°
0.20°
0.42°
0.23°
0.48°
0.17°
0.36°
Antenna Noise Temperature (K)
5° Elevation
10° Elevation
20° Elevation
40° Elevation

52
43
37
35

49
40
35
33
 
53
44
39
37
 
87
73
65
61
 
75
60
51
47
 

Typical G/T (dB/K) (3)

4.000 GHz, 30 K LNA 29.8 30.0 29.6
11.725 GHz, 70 K LNA

29.8
30.0   29.6
 
35.2
 
36.1
 
Axial Ratio (dB)  0.50  0.50                
Power Handling (total)    10 kW CW    10 kW CW    10 kW CW    2 kW CW    2 kW CW
Cross Polarization Isolation (dB)
On Axis
Within 1.0 dB beamwidth

30.8
30.8

30.8
30.8

35.0
30.0

35.0
30.0

35.0
30.0

35.0
30.0

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)

0
-85

-70
0

0
-85

-50
0

0
-85

-70
0

0
-85

-70
0

0
-85

-75
0
 RF Specification  975-3475  975-3478  975-3480  975-3484  975-3486
Sidelobe Performance  ITU-RS-580, FCC

 

Mechanical/Environmental (4) Kingpost Pedestal (KX120) Kingpost Pedestal (KX200)
Antenna Diameter 7.3 meters (24 feet)
Antenna Type 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 jack screws
120° continuous
0 to 90° continuous
Manual jack screws
200° (2 segments @ 120°)
0 to 90° continuous
Foundation (L x W x D)
Concrete
Reinforcing Steel
16.5 x 16.5 x 2 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
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