The Impact Of 3° Spacing On Cable Television (1981)
By Walter H. Braun, Systems And Advanced Technology Engineering
This paper discusses the impact of 30 orbital spacing upon satellite distribution of cable television programming. Included are preliminary results of:
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Experiments designed to establish an appropriate protection ratio for cable video transmissions.
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Calculations indicating expected levels of interference at 3° spacing.
The conclusions of these exercises indicate that a 3 orbital spacing for C-band domestic satellites will not have a deleterious impact upon program distribution to existing (4.5 meter) cable earth stations. Recommendations are made concerning appropriate protection ratios, use of 3 meter antennas and optimum spacecraft deployment schemes.
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