| 词条 | Spaceway F1 |
| 释义 |
| name = SPACEWAY-1 | image = | image_caption = | mission_type = | operator = DirecTV | website = | COSPAR_ID = | SATCAT = | mission_duration = 12 years | spacecraft_bus = BSS-702 | manufacturer = Boeing | dry_mass = | launch_mass = | power = | launch_date = {{start-date|April 26, 2005}} | launch_rocket = Zenit-3SL | launch_site = Odyssey | launch_contractor = Sea Launch | entered_service = | disposal_type = | deactivated = | orbit_epoch = | orbit_reference = Geocentric | orbit_regime = Geostationary | orbit_periapsis = | orbit_apoapsis = | orbit_inclination = | orbit_period = | orbit_longitude = 103.0° West | orbit_slot = | apsis = gee | trans_band = | trans_frequency = 500 MHz | trans_bandwidth = | trans_capacity = | trans_coverage = | trans_TWTA = | trans_EIRP = | trans_HPBW = }} Spaceway F1[1] is part of DirecTV’s constellation of direct broadcast satellites. The satellite was launched via a Zenit 3SL rocket from Sea Launch’s Odyssey equatorial platform on April 26, 2005. Its operational position is in geosynchronous orbit {{convert|35800|km}} above the equator at 103.0 degrees west longitude. SPACEWAY-1 is a Boeing 702-model satellite with a 12-year life expectancy. It provides high definition television to DirecTV customers with its Ka-band communications payload. DirecTV is not expected to make use of the broadband capabilities on SPACEWAY-1 even though it was originally built by Boeing for this purpose. SPACEWAY-1 was the heaviest commercial communications satellite (13,400-lb or 6,080-kg) ever put into orbit[2] until iPSTAR-1 (6,775 kg) was launched by Arianespace on August 11, 2005. DirecTV-10 is co-located with SPACEWAY-1 in order to use the 500 MHz of unused spectrum for HDTV broadcasting. This spectrum was originally intended for the broadband internet capabilities of the two SPACEWAY satellites which were disabled by Hughes at the request of DirecTV. References1. ^{{cite web|url=http://www.spaceref.com/news/viewpr.html?pid=16748|title=DIRECTV's Spaceway F1 Satellite Launches New Era in High-Definition Programming; Next Generation Satellite Will Initiate Historic Expansion of DIRECTV|publisher=SpaceRef|accessdate=1 August 2010}} 2. ^{{cite web |url=http://www.comspacewatch.com/news/viewpr.html?pid=16749 |title=Sea Launch Successfully Delivers Spaceway to Orbit - Heaviest Commercial Satellite Launched to Date |deadurl=yes |archiveurl=https://web.archive.org/web/20120403142425/http://www.comspacewatch.com/news/viewpr.html?pid=16749 |archivedate=2012-04-03 |df= }} External links
4 : Satellites using the BSS-702 bus|Communications satellites in geostationary orbit|Spacecraft launched by Zenit and Energia rockets|DirecTV |
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