C-Band (KXC120), Ku-Band (KXK120)

The General Dynamics SATCOM Technologies 11.1-meter antenna delivers exceptional performance for transmit/ receive and receive only applications in L through DBS-band frequencies. This antenna offers a reflector design that incorporates precision-formed panels, truss radials and 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.

  • Fully interchangeable reflector components with aluminum reflector panels and galvanized steel backup structure
  • Designed for 1.5 to 18 GHz operation, meeting FCC and ITU-RS-580 requirements
  • Galvanized steel elevation over azimuth pedestal with jackscrews
  • Survives 125 mph winds in any position

 

Product Details

Features

A large center hub provides spacious accommodation for equipment mounting. The reflector is supported by a galvanized elevation over azimuth 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 (B, C) and Eutelsat requirements.

Options

  • L, S, C, X, Ku and DBS-band feed configurations
  • C/Ku receive-only feed systems
  • CP/LP manual or remote switchable feeds
  • 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
  • Packing for sea and air transport
  • Turnkey installation and testing or assistance

Upgrades

  • X-band low PIM reflector/feed configurations
  • Extended azimuth travel
  • High wind configuration
  • Low operating temperatures
  • High power configurations
  • Extended continuous azimuth travel

Specifications

C-Band 4-Port Linear Polarized
C-Band 4-Port Circular Polarized
Ext. C-Band 4-Port Linear Polarized
X-Band 2-Port Circular Polarized
Ext. Ku-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
7.250 -
7.750
7.900 -
8.400
10.700 -
12.750
13.750 -
14.500
Antenna Gain, Midband dBi (2) 52.00 55.70 51.90 55.60 51.90 55.70
57.20 57.90 60.30 62.00
VSWR 1.25:1  1.25:1  1.25:1  1.25:1  1.30:1  1.30:1  1.25:1  1.25:1  1.30:1  1.30:1
Pattern Beamwidth (2)
-3 dB, at midband
-15 dB, at midband
0.44°
0.92°
0.28°
0.59°
0.43°
0.90°
0.28°
0.59°
0.43°
0.90°
0.28°
0.59°
0.23°
0.48°
0.21°
0.44°
0.15°
0.32°
0.13°
0.27°
Antenna Noise Temperature (K)
5° Elevation
10° Elevation
20° Elevation
40° Elevation

53
44
38
36

55
46
40
38
 
57
48
42
40
 
74
63
57
55
 
95
82
73
69
 

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

33.0 (35 K LNA)
33.1 (35 K LNA) 33.0 (35 K LNA) 36.5 (60 K LNA) 38.7 (70 K LNA)
Axial Ratio (dB)
 0.50  0.50 1.50 1.50    
Power Handling (total)   10 kW CW   10 kW CW   10 kW CW    5 kW CW    2 kW CW
Cross Polarization Isolation (dB)
On Axis
Within 1.0 dB beamwidth

35.0
30.0

35.0
30.0

30.8
30.8

30.8
30.8

35.0
30.0

35.0
30.0

21.3
21.3

21.3
21.3

35.0
35.0

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

0
-30

-30
0

0
-85

-70
0

0
-85

-70
0

0
-110

-110
0

0
-85

-70
0
Sidelobe Performance Meets FCC 25.209, Intelsat or ITU-RS-580
RF Specifications 975-1276
975-1058
975-1864
975-2378
975-1942

 

Mechanical/Environmental (4) Kingpost Pedestal (KX120) Kingpost Pedestal (KX200) High Wind Kingpost Pedestal (KP-HW)
Antenna Diameter 11.1 meters (36.5 feet)
Antenna Type Cassegrain design
Reflector Construction 36 precision-formed aluminum panels (two-tier) with heat-diffusing white paint, galvanized steel back-up structure
Hub Dimensions 80 in (203 cm) OD, 48 in (122 cm) depth 88 in (224 cm) OD, 48 in (122 cm) depth
Mount Configuration Elevation over azimuth pedestal, constructed of galvanized steel
Drive Type
Azimuth Travel
Elevation Travel
Machine jack screws
120° continuous
0 to 90° continuous
Machine jack screws
200° (2 segments @ 110°)
0 to 90° continuous
Machine jack screws
180° (3 segments @ 70°)
0 to 90° continuous
Foundation (L x W x D)
Concrete
Reinforcing Steel
24.0 x 24.0 x 2.0 ft (7.3 x 7.3 x 0.6 m)
43.0 yds³ (32.9 m³)
6,000 lbs. (2,722 kg)
30.0 x 30.0 x 2.0 ft (9.1 x 9.1 x 0.6 m)
100 yds³ (77 m³)
7,730 lbs. (3,500 kg)
Shipping Containers Two 40 ft open top, one 40 ft standard Three 40 ft open top, 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)
125 mph (200 km/h) @ 58° F (15° C)
Up to 60 mph (97 km/h)

180 mph (290 km/h) @ 58° F (15° C)
210 mph (338 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