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The above picture is generic in nature and will be changed as per the specs complied. The 7.5 M Earth Station Antenna is designed for High Structural Stability, POINTING and TRACKING accuracies. The Antenna Feed System consisting of corrugated conical Horns, and form shaped Cassegrain optics with dual shaped reflector and Sub reflector. The Antenna Reflector consists of 16 no’s of panels, 16 no’s Trusses (All made from High strength Aluminum Alloy extrusion and sheets) and Central hub (Steel Hot Dip Galvanized). The Hub is spacious to accommodate the Receive Electronics like LNAs etc. Suitable ladder and platform will be provided for maintenance without restricting the movement of EL & AZ axis. 0
The Mount is an Elevation over Azimuth type and is available in 2 configurations one is Kingpost Mount, Azimuth rotation 120 0 0 continuous and 180 in two positions and second is Conical Mount, Azimuth rotation 360 . The Mounts are all made with structural steel, Galvanised and Reflector is painted with white heat diffusing polyurethane paint. The Antenna meets latest specs of ITU-RS-580-6 or latest.
Options: • 2 Port /4 Port • Linear /Circular Feed • Customized frequency tuned Feed • Integrated transmit cross-axis kits • Composite Feed (C+KU) • De-icing for Reflector and Feed • Auto / Step Track Mechanism using Antenna Control System & Beacon Receiver • Turnkey Installations, Commissioning including Civil Foundation.
Address: Plot No 22, IDA, Mallapur, Hyderabad – 500076, INDIA. Ph: +91 40 27150484, Fax: +91 40 27155045 Email:
[email protected], Website: www.comsatsystems.co.in
SPECIFICATIONS ELECTRICAL Antenna Size Antenna Optics Feed Type Feed Options Frequency (GHZs)
: 7.5 M : Shaped Parabolic Cassegrain System Composite, Conical Horn Feed & Sub Dish Reflector 2 Port / 4 Port, Linear / Circular C Band
Extn C Band
Ku Band
Rx 3.7 - 4.2
Tx 5.85 - 6.725
Rx 4.5 - 4.8
Tx 6.725 - 7.025
Rx 10.95 - 12.75
Tx 14 - 14.50
Antenna Gain (Feed flange) Mid Band(dBi) ± 0.5 dB
47.5
51.5
49.5
52.2
57.5
58.8
Beam width 3dB
0.65
G/T Antenna Noise temperature 0 5 Elevation 0 10 Elevation 0 20 Elevation 0 40 Elevation
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0.44
0
0.61
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0
0.38
0
0.23
0
29.0 dB/ k with 30⁰K LNA
0.19 0
30.0 dB/ k with 35⁰K LNA
51 K 42 K 35 K 33 K
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35.2 dB/ k with 70⁰K LNA
53 K 44 K 39 K 37 K
87 K 73 K 65 K 61 K
Feed V.S.W.R Insertion Loss Isolation Tx to Rx Cross Pol. Discrimination Power Handling Capacity Output wave guide Flange Radiation Pattern
: 1.25:1 : Rx Port : 0.2 dB, Tx port : 0.15 dB : 90 dB : > 35 dB (on Axis), 30 dB (across 1 dB beam width) : C & Extn C Band : 3 KW, Ku Band : 1 KW : C & Extn C Band : Rx : CPR 229, Tx: CPR 137, Ku Band : Rx & Tx : WR 75 Flat : As per ITU R.S 580 – 6 or latest
MECHANICAL Azimuth Travel Elevation Travel AZ / El Travel Rate Polarization Travel Weight of Reflector Weight of Mount Reflector Structure Mount Structure Foundation
: King Post Mount: 120 continuous (Motorized), 180 in 2 segments, Conical Mount: 360 continuous (Motorized) 0 0 : 5 -90 continuous (Motorized) 0 : 4 / Min (Motorized) (or) As per the customer requirement. 0 : +90 continuous (Motorized) : 1500 Kgs : 2000 Kgs : Precision formed solid aluminium alloy : Steel (Hot Dip Galvanized) : Varies as per site SBC report, type of Mount & Ground/Rooftop
ENVIRONMENTAL Wind Loading Ambient Temperature Rain Humidity Atmospheric conditions Shock and Vibrations
: Operational: 70 Kmph gusting to 100 Kmph, Survival : 200 Kmph 0 0 : -20 to +60 C : Upto 100 mm.hr : 100% : As encountered in Marine / Industrial : As encountered during shipment by Truck, Ship or Air
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© 2015 Comsat Systems. All rights reserved. Comsat Systems reserves the right to make changes in its products and specifications at anytime and without notice.
Address: Plot No 22, IDA, Mallapur, Hyderabad – 500076, INDIA. Ph: +91 40 27150484, Fax: +91 40 27155045 Email:
[email protected], Website: www.comsatsystems.co.in
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