1.8 Meter C180FM Manual Flyaway Antenna

The General Dynamics SATCOM Technologies lightweight 1.8-meter SF antennas are designed for worldwide transmit and receive operation in C, X, Ku and Ka band. These portable antennas consist of composite reflectors and aluminum tripod base mounts. This results in a low-weight antenna with superior stiffness and high performance under wind loading conditions.

 

Product Details

Features

The unique shape and the accurate reflector surface provide good sidelobe and cross-polarization performance. Repeatability is maintained with precision registration of the nine-piece reflector segments and the feed support structure. The complete 1.8-meter antenna system, including a single feed, is packaged in multiple portable cases depending on options ordered.

  • Carbon fiber composite reflector
  • Tripod base mount
  • Less than 30-minute setup
  • Captive hardware/fasteners
  • No tools required
  • Quick adjust positioner
  • Intelsat/Eutelsat sidelobe compliant (C and Ku band)
  • Feed boom supports up to 40 lbs. for amplifier mounting
  • Lightweight transport cases

Options

  • Multiple feed configurations
  • Multiple colors

Specifications

C-Band 2-Port Linear Polarized Feed
C-Band 2-Port Circular
Polarized Feed
X-Band 2-Port Circular
Polarized Feed
Ku-Band 2-Port
Linear Polarized Feed
Ku-Band 2-Port Circular
Polarized Feed (Cross-Pol Compensated)
Electrical (3) 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
10.950 -
12.750
13.750 -
14.500
10.950 -
12.750
13.750 -
14.500
Antenna Gain, Midband dBi  35.60  39.30  35.30  39.30  41.30  42.00
 45.10  46.10  44.90  46.50
Antenna Noise Temperature
5° Elevation
10° Elevation
20° Elevation
40° Elevation
56 K
42 K
37 K
38 K
  73 K
59 K
54 K
55 K

67 K
57 K
52 K
54 K
  73 K
61 K
54 K
53 K
  69 K
57 K
50 K
49 K
 
Typical G/T at 4.000 GHz, 20° Elevation, Clear Horizon
C-Band 35° K LNA
C-Band 50° K LNA
Typical G/T at 7.500 GHz, 20° Elevation, Clear Horizon
X-Band 60° K LNA
X-Band 80° K LNA
Typical G/T at 11.850 GHz, 20° Elevation, Clear Horizon
Ku-Band 70° K LNA
Ku-Band 90° K LNA

17.0 dB/K
16.2 dB/K






15.8 dB/K
15.1 dB/K





 



20.8 dB/K
20.1 dB/K



 






24.2 dB/K
23.5 dB/K
 






24.1 dB/K
23.4 dB/K
 
Pattern Beamwidth (in degrees at midband)
-3 dB Beamwidth
-15 dB Beamwidth
2.84
5.96
1.87
3.93
2.88
6.05
1.86
3.91
1.44
3.02
1.33
2.79
0.92
1.93
0.83
1.74
0.95
1.99
0.80
1.68
Sidelobe Performance
For Angle A beyond Mainbeam to 20°
For Angles from 20°-48°
For Angle A from 1°-30°
For Angle A beyond
Mainbeam to 48°
For Angles from 48°-140°
For Angles from 140°-180°
For Angle A from 30°-130°
For Angles from 130°-180°





32-25 log A
-10 dBi
0 dBi







32-25 log A
-10 dBi
0 dBi







32-25 log A
-10 dBi
0 dBi







32-25 log A
-10 dBi
0 dBi



29-25 log A
32-25 log A



-10 dBi
0 dBi


29-25 log A
32-25 log A



-10 dBi
0 dBi




29-25 log A




-10 dBi
0 dBi



29-25 log A




-10 dBi
0 dBi



29-25 log A




-10 dBi
0 dBi



29-25 log A




-10 dB
0 dBi
Cross Polarization Isolation
On Axis
Within 1.0 dB beamwidth
30.0 dB
26.0 dB
30.0 dB
26.0 dB
15.3 dB
15.3 dB
17.7 dB
17.7 dB
21.3 dB
21.3 dB
21.3 dB
21.3 dB
30.0 dB
27.0 dB
30.0 dB
27.0 dB
35.0 dB
27.0 dB
35.0 dB
35.0 dB
VSWR  1.30:1  1.30:1  1.30:1  1.30:1  1.30:1  1.30:1  1.30:1  1.30:1  1.35:1  1.30:1
Axial Ratio 3.01 dB
2.28 dB
1.50 dB
1.50 dB

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

0 dB
-70 dB

-30 dB
0 dB

0 dB
-85 dB

-50 dB
0 dB

0 dB
-110 dB

-110 dB
0 dB

0 dB
-85 dB

-35 dB
0 dB

0 dB
-85 dB

-30 dB
0 dB
Feed Insertion Loss
0.20 dB
0.15 dB
0.40 dB
0.20 dB
0.40 dB
0.40 dB
0.40 dB
0.25 dB
0.30 dB
0.20 dB
Output Waveguide Flange Interface
CPR-229G
CPR-137G
CPR-229G
CPR-137G
CPR-112G
CPR-112G
WR-75 Flat
WR-75 Flat
WR-75 Flat
WR-75 Flat
Total Power Handling Capability
2.00 kW CW
2.00 kW CW
5.00 kW CW
2.00 kW CW
2.00 kW CW
RF Specification
975-3381
975-3380
975-3125
975-3379
975-3437

 

Consult factory for options
Mechanical
Cross Elevation (Azimuth) Adjustment Range ±20° manual adjustment
Elevation Adjustment Range 5° to 85°
Antenna Optics Single offset, 0.74 F/D ratio
Reflector Material Nine-piece carbon fiber composite
Pedestal Structure Aluminum, stainless steel and brass
Boom Mounted HPA Loading ¹ 40 lbs. (18 kg) mounted near reflector (HPA may limit travel)
Shipping Specifications Ruggedized Aluminum Cases
Case Contents Size Loaded Weight
Reflector 41” x 35” x 33” H (104 x 89 x 84 cm) 128 lbs. (58 kg)
Pedestal 41” x 35” x 33” H (104 x 89 x 84 cm) 132 lbs. (60 kg)
Components 47” x 31” x 20” H (119 x 79 x 51 cm) 148 lbs. (67 kg)
Feeds Consult factory for options

 

Environmental
Wind Loading Operational (anchored) 30 mph (48 km/h) gusting to 45 mph (72 km/h)
Wind Loading Survival (with tie-downs) 60 mph (96 km/h)
Pointing Loss (operational winds) Maximum 2.0 dB peak Rx loss at Ku
Operational Temperature, ambient -22° to +140° F (-30° to +60° C)
Survival Temperature, ambient -40° to +140° F (-40° to +60° C)
Relative Humidity (operational and survival) 0% to 100%
Solar Radiation 360 BTU/h/ft2 (1000 Kcal/h/m2)
Shock and vibration tolerant to conditions encountered during shipment by airplane, ship or truck. Atmospheric tolerant to conditions encountered in coastal regions and/
or heavily industrialized areas.