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Yuri (satellite)

From Wikipedia, the free encyclopedia

Yuri, also known as Broadcasting Satellite or BS, was a series of Japanese direct broadcast satellites.

The first satellite of this series, called BSE or Yuri 1, was launched in 1978. The last BS series satellite, BS-3b (Yuri 3b), was launched in 1991.

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Transcription

Early models

The 350 kg BSE was followed in 1984 and 1986 by the operational and essentially identical BS-2a and BS-2b satellites, respectively. Each spacecraft carried two active and one spare 100 W. 14/12 GHz transponder. Built by EURO with assistance from ASR, the BS-2 series satellites were designed for five years of operation. BS-2a was moved to a graveyard orbit in 1989, as was BS-2b in 1992.

BS satellites

BS satellites were used for Direct-To-Home television services in Japan. Japanese satellite television, which uses an analog format, started with test broadcasts carried out by the semigovernmental NHK (Japan Broadcasting Corporation) in 1984. At the time, direct satellite TV reception (DTH) was obtainable with a small parabolic antenna 40 cm to 60 cm in diameter in all areas of Japan when broadcast from a geostationary earth orbit (GEO) at 110 degrees east longitude. All BS satellites were of the same basic configuration: 3-axis stabilization of a rectangular satellite bus with two elongated solar arrays. After the first successful test of satellite broadcasting with a TV signal, many Japanese producers of consumer electronics began to deliver a range of equipment with built-in satellite receivers for the local consumer market. This included the Satellaview satellite modem peripheral for Nintendo's Super Famicom system, as well as satellite television and satellite radio services for the Japanese market.

Eventually, the satellites of the BS series were replaced by the more advanced B-Sat series.

Satellites

Broadcasting Satellites
# Satellite NSSDC ID Launch Date Launch Site Rocket Outcome Notes
1 BSE 1978-039A 1978-04-07 United States Cape Canaveral SLC-17 Delta 2914 Success Also known as "Yuri 1".
2 BS-2A 1984-005A 1984-01-23 Japan Tanegashima N-2 Success Two of three transponders failed within three months
3 BS-2B 1986-016A 1986-02-12 Japan Tanegashima N-2 Success
5 BS-2X 1990-02-22 France Kourou Ariane 44L Launch failure Destroyed during launch of Ariane V36.[1]
6 BS-3A 1990-077A 1990-08-28 Japan Tanegashima H-I Success
7 BS-3H 1991-04-19 United States Cape Canaveral LC-36 Atlas-Centaur Launch failure Destroyed during launch of Atlas-Centaur 070.[2]
8 BS-3B 1991-060A 1991-08-25 Japan Tanegashima H-I Success
9 BS-3N 1994-040B 1994-07-08 France Kourou Ariane 44L Success

References

  1. ^ "TSE - Ariane V36". The Satellite Encyclopedia.
  2. ^ "TSE - Atlas AC070". The Satellite Encyclopedia.

External links

This page was last edited on 31 March 2023, at 10:34
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