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Mechanical
Reflector Type
1.8M Prime Focus Offset
Mount Geometry
Elevation over Azimuth
Polarization
Rotation of Feed
Travel
Azimuth
270° for 2-Port, 240° for 4-Port
400° Optional for 2-Port or Feed Boom Mounted HPA
Elevation
Operational
0-90° or 0-65° of reflector boresight
Total
0-160°
Polarization
±50° for 4-Port or ±95° for 2-Port
Speed
Slewing/Deploying
2°/second
Peaking
0.2°/second
Drive System
Roto-Lok ®
Motors
24V DC Variable Speed, Constant Torque
RF Interface
Waveguide
WR 75 Cover Flange at center of azimuth axis
Coax
RG59
Electrical Interface
25 ft. Cable with Connectors for Controller
Manual
7/16 Hex Socket Wrench on All Axii
Weight
300 lbs.
Environmental
Wind
Survival
Deployed
80 mph
Stowed
125 mph
Operational
Tracking
45 mph gusting to 60 mph at 60º F
Temperature
Operational
-20°F to 125°F
Survival
-40°F to 140°F
Electrical RF
Receive
Transmit
Frequency
11.7-12.75 GHz
14.0-14.5 GHz
Gain (Midband)
R/T
45.3 dBi
46.7 dBi
4-Port
45.2 dBi
46.6 dBi
VSWR
1.30:1
Beamwidth (degrees)
-3 dB
.91
.77
-15 dB
1.91
1.62
First Sidelobe Level (Å2 dB)
-20 dB
-20 dB
Radiation Pattern
Meets FCC requirements for 2° Spacing
Antenna Noise Temperature
10° Elevation Angle
43°K
Polarization
Linear
Linear
Power Handling Capability
1KW per port
Cross-Pol Isolation
On-Axis
35 dB
35 dB
Off-Axis (within .5 dB BW)
25 dB
26 dB
Off-Axis (within 1 dB BW)
22 dB
24 dB
Feed Port Isolation - 4-Port Feed
RX/RX
30dB
TX/TX
30 dB
TX/RX
60 dB
60 dB
Controller
RC3000A
Full-function controller with opt. GPS and Flux-Gate
Size
Two rack units high
Input Power
110V AC, 1 ph, 60 Hz, 15 amp
ANTENNA SYSTEMS
704 North Clark Street
Albion, MI 49224 USA
Tel: (517)629-5990
Fax: (517)629-6690
E-mail: info@sepatriot.com
Web site: www.sepatriot.com
ANTENNA SYSTEMS
1.8M MVSAT Antenna
INSTALLATION &
ASSEMBLY INSTRUCTIONS
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Related Manuals for Patriot Antenna 1.8M MVSAT
Summary of Contents for Patriot Antenna 1.8M MVSAT
- Page 1 Off-Axis (within 1 dB BW) 22 dB 24 dB ANTENNA SYSTEMS Feed Port Isolation - 4-Port Feed RX/RX 30dB 704 North Clark Street 1.8M MVSAT Antenna TX/TX 30 dB Albion, MI 49224 USA TX/RX 60 dB 60 dB Tel: (517)629-5990 Controller INSTALLATION &...
- Page 2 IN NO EVENT SHALL PATRIOT ANTENNA BE LIABLE FOR ANY LOSS OF PROFITS, LOSS OF USE, INTERRUP- TION OF BUSINESS, OR INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES OF ANY KIND. In no event shall PATRIOT ANTENNA be liable for damages in an amount greater than the purchase price of the equipment.
- Page 3 Check oil level in gearbox. Use of WARNINGS, CAUTIONS, NOTES, etc. Remove cable termination, block covers, and inspect cable terminations. Tighten springs if more than .010 gap exists. Warnings, Cautions, and Notes are included throughout this manual to provide necessary information. THEY SHOULD NOT BE IGNORED.
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Page 4: Feed Assembly
All persons performing work on the antenna system shall also comply with the Occupational Safety and Health Act (OSHA) standards and all other federal state and The Patriot Antenna 1.8 MVSAT system is designed so that any wear should never degrade local laws, ordinances, regulations and codes relating to designated work. -
Page 5: Table Of Contents
TABLE OF CONTENTS FEED AND POLARIZATION POSITIONING SYSTEM SECTION DESCRIPTION PAGE 5.1 GENERAL INTRODUCTI0N........................The feed assembly consists of the feed boom, feed housing, RF components and polarization drive. The feed pivots about the elevation axis to eliminate additional flex-guide required when pivoting at the edge of the reflector. -
Page 6: Technical Description
Also, pivoting the feed boom at the elevation axis provides maximum space for a feed boom mounted amplifier or transceiver. The Patriot Antenna System weighs only 220 lbs (100Kgs). DRIVE SYSTEM The drive system utilizes highly reliable aircraft control cables in a redundant configuration to achieve a near-zero backlash, lightweight, very stiff drive system. -
Page 7: Specifications
1.2/1.5/1. 8 -METER SPECIFICATIONS MECHANICAL 1.2/1.5/1.8-METER MECHANICAL SPECIFICATIONS Azimuth Travel +130°continuous travel Elevation Travel 5° - 90° of reflector boresight 0° - 65° for CE approved Polarization Travel +95° (for 2-port feed) +55° (for 4-port feed) Drive Rates 2° / second (Az/El/Pol.) 0.1°... -
Page 8: General
INSTALLATION AND SET -UP 2.1 GENERAL The 1.8 MVSAT antenna has been fully tested with the controller prior to shipment. All position feedback, limit sensing, limit switches and motors have been calibrated or set. The installation involves securing to vehicle, connecting waveguide, installing LNB’s, connecting coaxial cable, connection of control cables to controller and connecting auxiliary control cable as necessary. -
Page 9: Elevation Stow Switch Verification
2.4 CONTROLLED / POSITIONER VERIFICATION TEST The motor drives the input worm via a quill / female hole and square key. The worm shaft is extended with a hex shape for the hand crank. The dual elevation drive shafts are driven with a square key. Zero Turn power on. -
Page 10: Final Calibration Of System
Have personnel on both sides of truck observing orientation of gas strut U-joints. Watch reflector Due to the fact that stow switch actuation occurs at slightly different positions depending on the surface approach feed horn. direction of approach, clockwise or counterclockwise, the azimuth stow may vary approximately 1° from the actual 0°... -
Page 11: Azimuth Bearing
3.0 AZIMUTH POSITIONING SYSTEM 3.1 AZIMUTH BEARING The azimuth bearing is a precision ground Slim Line ball bearing with a dynamic and static moment capacity of over four times the worst-case wind load specification. It is press / shrink fit into a special aluminum bearing ring consisting of main internal and external rings with clamping rings. -
Page 12: Azimuth Position Feedback
The low backlash is achieved with a variable pitch worm. The width of the worm tooth slowly increases along the worm. Since only one small portion of the worm tooth is meshing with the worm gear, by moving the worm axially, you can vary which section / width of the worm tooth is being used to drive the worm gear.