| Optus Fleet Of Satellites |
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This is a list of the satellites operated by Optus , an Australian telecommunications company. A-CLASS
The Aussat A-Class satellites were funded by the Government for Aussat Pty Ltd. When Optus was granted a telecommunications carrier licence, the Aussat A-Class satellites were also a part of the carrier licence deal. Aussat (Optus) A1 Aussat (Optus) A2
Aussat (Optus) A3
B-CLASS
The B-Class satellites were launched from the Xichang Satellite Launch Center by Long March Rocket s. Optus B1
Optus B1 was retired in early 2007 , following transfer of services to Optus D1 after over 14 years of operation. Failures Satellite Control Processor On 21 May 2005 services were temporarily lost when the Primary Satellite Control Processor failed. The satellite was switched to use the Backup SCP in order to restore services. Thereafter the satellite continued to operate from the Backup SCP. [http://www.sat-index.com/failures/hs601.html March 2006 Positioning Failure At 06:52 . [http://www.skytv.co.nz/index.cfm?pageid=469&script=newsrelease&dsp=nr&newsid=199&nrcontent=0 , a peak time for listeners and viewers of the radio and television broadcast and subscription services provided directly or indirectly by the satellite. See Also: SKY Network Television#2006 SKY Digital outage Optus B2
The launchcraft containing Optus B2 exploded on launch and was subsequently destroyed, for reasons that the designer Hughes and the Chinese (Launch Location) authorities were unable to determine. However, according to {Link without Title} , shortcomings in the launch vehicle guidance system meant that it failed to compensate for wind-shear effects within the first minute after launch. Optus B3 Optus B3 was launched as a replacement for the failed Optus B2. This satellite is owned by the Commonwealth Bank of Australia and leased back to Singtel Optus. OPTUS (AND DEFENCE) C1
Partially funded by the Australian Government (Defence Department) - Optus C1's use is shared between Defence and Telecommunications, in particular the supply of Television services to Australia. Television Services The Ku band Transponders are exclusively used for Television Services, mainly:
Defence Services The remaining transponders (being Ka band, X band and UHF) are exclusive for Defence/Military use. D-CLASS
The D1 and D2 satellites are expected to replace and expand the services provided by the B1 and B3 satellites respectively, which have both been operating beyond their design lifetimes. Optus D1
D1 was successfully . {Link without Title} Customers on D1 include the Australian Broadcasting Corporation (ABC), Special Broadcasting Service (SBS), the Seven Network , the Nine Network , Sky Television New Zealand and New Zealand's Kordia (formerly known as BCL). D1 also supports VSAT users. {Link without Title} Kordia is leasing a full transponder for sublease to TVNZ (TV1 & TV2) and CanWest (TV3 & C4) for the Freeview service. The Kordia transponder will be on 12.4697GHz. {Link without Title} Incorrect configuration of New Zealand spot beam During in-orbit testing of the satellite, it was discovered that the New Zealand spot beam had been configured with horizontal polarisation instead of the expected vertical polarisation - as had been used on its predecessor Optus B1 . {Link without Title} {Link without Title} As many existing receivers did not have the ability to receive horizontally aligned signals, Sky Television was unable to transfer services from Optus B1 to this beam as expected. Sky was instead assigned capacity on the more general Australia/NZ beam. Due to restrictions on broadcast rights (in terms of both Broadcast Licensing and Copyright ), the unencrypted Freeview service could not make a similar allocation switch and was set up as a horizontally-aligned service on the New Zealand spot beam. {Link without Title} On 2007-07-31 , Sky successfully performed an over the air software upgrade to all of its customer Set-top Box es, enabling them to receive the horizontally-aligned signals from the New Zealand spot beam. Accordingly, Sky was able to return to their original capacity allocation. {Link without Title} Optus D2 (under construction)
Optus D3 (planned)
The third in the D series of Optus satellites is planned for launch in late 2008 by to provide High Definition programming as well as "new channels, expanded digital services and enhanced picture and sound quality". {Link without Title} {Link without Title} EXTERNAL LINKS
Satellite information and orbital data | ||
| B1: | "http://wwwheavens-abovecom/satinfoaspsatid=22087" class="copylinks" target="_blank">Info Orbit data |
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| B3: | "http://wwwheavens-abovecom/satinfoaspsatid=23227" class="copylinks" target="_blank">Info Orbit data |
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| C1: | "http://wwwheavens-abovecom/satinfoaspsatid=27831" class="copylinks" target="_blank">Info Orbit data |
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| D1: | "http://wwwheavens-abovecom/satinfoaspsatid=29495" class="copylinks" target="_blank">Info Orbit data |
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