The Satellite Industry Assn. (SIA) asked the FCC not to adopt a r...
The Satellite Industry Assn. (SIA) asked the FCC not to adopt a rule requiring geostationary satellite orbit (GSO) mobile satellite service (MSS) birds to “maintain a longitudinal (East-West) station-keeping tolerance of 0.05 degrees, rather than the currently permitted tolerance…
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of 0.1 degrees.” The organization’s comments were submitted in case involving the mitigation of orbital debris. SIA said the change was unnecessary and would increase the operating costs of GSO MSS satellites. While the 0.05 degrees longitude requirement is applied to GSO FSS satellites, the restriction was created “in response to concerns that FSS networks operating in a 2 degrees spacing environment would need the stringent longitude station-keeping requirement in order to avoid harmful interference between adjacent networks,” SIA said. The same risk isn’t present with MSS satellites, and would require more fuel and reduce satellites’ operating life, it said.