Model 1.5m SF-LT Motorized Flyaway Antenna
Model 1.5m SF-LT
Motorized Flyaway Antenna
Flyaway Antennas
Description
The General Dynamics SATCOM Technologies lightweight 1.5meter motorized flyaway antenna is designed for worldwide
transmit and receive operation in C, X, Ku and Ka-band.
This flyaway antenna consists of a carbon fiber composite
reflector, a cable-driven elevation-over-azimuth positioner
and an aluminum/CFRP support structure. This results in a
low-weight, motorized antenna with superior stiffness and
high performance under wind loading conditions.
The unique shape and the accurate reflector surface
provide exceptionally low sidelobe and cross-polarization
performance meeting INTELSAT and EUTELSAT
requirements. Repeatability is maintained with precision
registration of the five reflector segments and the feed
support structure. The interchangeable feeds are palletized
for quick, easy removal and replacement, allowing the enduser to effectively change frequency bands in the field within
minutes. The complete antenna system, including a single
feed and a motorized positioner, is packaged in four robust,
portable cases.
Features
„„ Carbon fiber reflector
The Strength to Perform
ƒƒ Lightweight, precision surface and high stiffness
„„ Cable-driven positioner
ƒƒ Composite/aluminum construction, lightweight, sturdy
„„ Easy deployment
ƒƒ Two-person assembly in less than 15 minutes, captive hardware and precision
alignment
„„ High performance
ƒƒ Low sidelobes and high EIRP capability
Options
„„ Finishes
ƒƒ White, green, tan or per customer spec
„„ Feeds
ƒƒ Four-port, co-pol, CP/LP switchable
„„ L, C, X, Ku, Ka and DBS-band
„„ C-band CP/LP switchable also available
1104 Energy Drive • Kilgore, TX 75662 USA • Tel: (903) 984-7811 • Fax: (903) 984-7597 • Email: [email protected]
Website: www.gdsatcom.com
655-0063A, 01/06
© 2006 General Dynamics. All rights reserved. General Dynamics reserves the right to make changes in its products and specifications at anytime and without notice. All trademarks
indicated as such herein are trademarks of General Dynamics. All other product and service names are the property of their respective owners. ® Reg. U.S. Pat. and Tm. Off.
Model 1.5m SF-LT Motorized Flyaway Antenna
Technical Specifications
Mechanical
Azimuth Travel
Elevation Travel
Polarization Travel
Reflector Structure
Pedestal Structure
Boom Mounted HPA Loading*
Transport Configuration
±120° (up to ±200° optional)
5° to 90°
±95° (linear polarization only)
Carbon fiber composite
Aluminum/composite cable-driven azimuth-over-elevation positioner on carbon fiber structural case
60 lbs. (27.2 kg)
Case
Contents
1
Pedestal
2
Reflector
3
Feed Boom, Legs, Backup Structure
Total System (feeds cased separately)
Feeds**
Case Size (L x W x H)
Total weight (component and case)
28” x 24” x 26”
125 lbs. (57 kg)
48” x 15” x 34”
90 lbs. (41 kg)
44” x 28” x 19”
120 lbs. (54 kg)
37.5 ft³
335 lbs. (152 kg)
Multiple configurations and options available (L, C, X, Ku, Ka or DBS-band)
Environmental
Wind Loading
Operational (with ballast)
40 mph (64 km/h) gusting to 50 mph (80 km/h)
Survival (with tie-downs)
65 mph (105 km/h) gusting to 75 mph (121 km/h)
Pointing Loss (operational winds)
Maximum 2.0 dB peak Rx loss at Ku
Temperature
Operational
-22° to +122° F (-30° to +50° C)
Survival
-40° to +158° F (-40° to +70° 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.
* Contact factory for mounting locations.
** Contact factory for details.
Electrical***
Frequency (GHz)
Antenna Gain at Midband, dBi
Antenna Noise Temperature
5° Elevation
10° Elevation
20° Elevation
40° Elevation
Pattern Beamwidth (in degrees at midband)
-3 dB
-15 dB
Sidelobe Compliant with
Power Handling
Axial Ratio
VSWR
Cross Polarization Isolation
On Axis
Within 1.0 dB Beamwidth
Port-to-Port Isolation
Rx/Tx (Rx frequency)
Tx/Rx (Tx frequency)
Output Waveguide Flange Interface
RF Specification
X-Band 2-Port Circular Polarized
Receive
Transmit
7.250 - 7.750
7.900 - 8.400
40.10
40.70
66 K
54 K
50 K
51 K
Ku-Band 2-Port Linear Polarized
Receive
Transmit
10.950 - 12.750
13.750 - 14.500
44.10
45.70
72 K
59 K
52 K
51K
1.65
1.54
3.46
3.23
DSCS Requirements
2.0 kW CW
1.50 dB
1.50 dB
1.30:1
1.30:1
Ka-Band 2-Port Circular Polarized
Receive
Transmit
20.200 - 21.200
30.000 - 31.000
49.10
51.70
158 K
129 K
108 K
96 K
1.04
2.18
0.87
0.56
1.83
1.18
Intelsat, Asiasat, Eutelsat
2.0 kW CW
1.00 dB
1.30:1
1.30:1
1.35:1
0.42
0.88
100.0 W CW
1.00 dB
1.30:1
21.3 dB
21.3 dB
21.3 dB
21.3 dB
35.0 dB
25.0 dB
35.0 dB
35.0 dB
24.8 dB
24.8 dB
24.8 dB
24.8 dB
0 dB
-110 dB
CPR-112
-110 dB
0 dB
CPR-112
0 dB
-85 dB
WR-75
-30 dB
0 dB
WR-75 Flat
0 dB
-85 dB
WR-42
-50 dB
0 dB
WR-28
975-2878
*** C and Ka-band feeds available. Contact factory for information.
975-2895
975-2877