Earth Station Design Considerations For 2° C Band Satellite Spacing (1983)

By Norman Weinhouse, Hughes Communication, Inc.

The Federal Communication Commission "Open Skies" policy, which allowed technically and financially qualified entities to launch and operate domestic satellite facilities, has been a great success. Benefits to virtually all elements of the telecommunications industry and ultimately to the public have been derived. The policy has certainly been a positive factor in the CATV industry, and perhaps a major technological catalyst in its development.

The geostationary orbital arc, that imaginary line 22,300 miles above the earth's equator, is a finite resource. It has been 2-1/2 years since the Commission made its last C-band authorization!. That round of authorizations established a constellation of C-band satellites with 4° spacing. Most of those satellites are currently in orbit, some will be launched this year, and the balance next year. The applications kept coming to the Commission, and in November 1981 a Notice of Inquiry and Proposed Rulemaking was issued relating to the implementation of a 2° spacing plan for both C-band and Ku-band satellites. The rulemaking involved establishment of new technical standards for earth station antennas relating to the gain and cross polarization isolation in the close-in sidelobes. Comments were made by 37 entities. At last year's NCTA convention this author was moderator of a session on this subject and gave a detailed report on the comments received by the Commission. At the time this paper is written, the FCC has still not completed its deliberations in this docket. Regardless of the exact determination, CATV existing facilities will be adversely affected. The degree to which they will be affected and when this will take place is speculative, and any analysis ultimately involves a subjective evaluation of an acceptable level of interference.

This paper will outline the ground terminal receive only design considerations 156 for 2° spacing of C-band satellites to permit antenna manufacturers to assess and respond to the changing marketplace. By the same token, operators should be aware that their facilities will probably need to be upgraded.

By clicking the "Download Paper" button, you are agreeing to our terms and conditions.

Similar Papers

Earth Station Design Considerations For 2° C Band Satellite Spacing
By Norman Weinhouse, Hughes Communication, Inc.
The Facts About Ku Band Satellite Transmission For Cable Television
By Norman Weinhouse, Norman Weinhouse Associates
A Cable Television Satellite Earth Station
By Thomas Smith and Peter M. Pifer, SCIENTIFIC-ATLANTA, INC
Design Considerations For A Bandwidth Efficient Split-band Trunk Station
By Joseph P. Preschutti, C-COR Electronics, Inc.
Next Generation C-Band Satellite Systems For Cable Program Distribution
By Bruce R. Elbert, Director, Galaxy Systems Hughes Communications, Inc.
CATV Via Satellite
By Frederick W. Ford, G. Norman Penwell, Louis B. Early, Robert D. Briskman, Irving A. Kahn, Frank W. Norwood, Nathaniel E. Feldman,
From Satellite To Earth Station To Studio To S-T-L To MDS Transmitter To The Home; Pay Television Comes To Anchorage, Alaska
By Richard L. Vega, Telecommunications Systems, Inc
Comprehensive Earth Station Filtering
By William P. Johnson, Microwave Filter Co., Inc.
Computer-Aided Design (CAD) Of TVRO Earth Stations
By Preston A. White Ill, Scientific-Atlanta, Inc.
Design Considerations For Mechanical Packaging Of A CATV Trunk Station
By Wayne Vaughn, Scientific-Atlanta, Inc.
More Results >>