They digital TV in New Zealand. Around 174 long.
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Optus owns and operates five satellites, Optus B3, C1, D1, D2 and D3. Four older satellites (A1, A2, A3 and B1) were retired at the end of their operational lives. Optus’ satellite footprints cover Australia, New Zealand, Asia, Hawaii, Norfolk Island, Papua New Guinea, Lord Howe Island, Cocos Island Christmas Island and McMurdo Sound.
Optus D1 -
It was launched in October 2006 and replaced B1 at 160°E. It carries 24 Ku-band transponders designed to provide fixed communications and direct television broadcasting services to Australia and New Zealand and specific offshore locations. All direct broadcast services for subscription and free-to-air television to New Zealand are carried on Optus D1 making it the New Zealand hot bird.
So, optusB (optusB1) and OptusD1 are separate satellites
Optus D1 -
It was launched in October 2006 and replaced B1 at 160°E. It carries 24 Ku-band transponders designed to provide fixed communications and direct television broadcasting services to Australia and New Zealand and specific offshore locations. All direct broadcast services for subscription and free-to-air television to New Zealand are carried on Optus D1 making it the New Zealand hot bird.
So, optusB (optusB1) and OptusD1 are separate satellites