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SAT Observations 97.05.18
WELCOME TO SAT-MIDEAST !
A news release from Cairo, Egypt, located at 30.3 North - 31.15 East,
sponsored by TELE-SATELLIT INTERNATIONAL, SATCO-DX and TBS Internet.
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WHAT YOU'LL FIND HERE:
- Satellite and Transponder Observations in C- and Ku-Band,
- Commented from the Middle Eastern perspective.
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HOW TO CONTACT SAT-MIDEAST:
Send relevant infos, interesting news, and creative comments to :
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Upon your request are forwarded messages kept anonymous.
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THE HEADLINES IN THIS 97.05.18 REPORT:
- Panamsat 7 info
- Turksat 2A info
- Hot Bird info
- Bits & Pieces
Today not so much transponder news, more something out of the corner of
Facts & Rumours, and to be honest: some is speculative, be warned...
PANAMSAT 7, t.b.l.@ 68.5 East, http://www.satcodx.com/launches.html
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The Panamsat 7 which is scheduled to be launched by an Ariane launcher
in the first quarter of 1998 has following details:
Satellite type: . . . . LORAL FS 1300
Lifespan: . . . . . . . 15 years
Polarization: . . . . . Linear (horizontal/vertical)
C-band transponder: . . 14 x 50 Watt each
C-band bandwidth: . . . 36 MHz
C-band downlink : . . . 3.400-3.700 GHz
C-band beam : . . . . . Europe/Africa/Asia (global)
Ku-band transponder : . 30 x 100 Watt each
Ku-band bandwidth : . . 36 MHz
Ku-band downlink: . . . 10.950-11.200 GHz and 11.450-11.750 GHz
Ku-band beam (a): . . . Europe/Middle East (0-12 transponder)
Ku-band beam (b1):. . . South Africa (6 fixed transponder)
Ku-band beam (b2):. . . South Africa (0-12 transponder)
Ku-band beam (c): . . . India (0-12 transponder)
Ku-band beam (d): . . . China (0-12 transponder)
SME Comment: Please note that the C-Band transponder center frequencies
are in the lower part of the band and all below the frequencies used on
Panamsat 4, on the same location.
The Ku-Band transponder frequencies from 11.450-11.750 GHz are currently
used by Showtime and 1stNet DStv transmissions on the Panamsat 4,
targeted towards the Middle East, so the frequencies on the Panamsat 7
can only be used on a not concuring beam (South Africa/China).
Following report is only partly confirmed, but it's a hot story:
Turksat 2A, t.b.l.@ 42 East, http://www.satcodx.com/launches.html
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Turksat 2A, the second in line of the French Aerospatiale built Turksat
series, will launch late next year with an Ariane launcher and be
operational in the first quarter of 1999. It will take over duties of
the presently on 42 East operated Turksat 1C, which itself thereafter
will be relocated, most probably in a co-orbit with Turksat 1B on 31
East.
The new satellite will be built on a Spacebus platform 3000, version B3.
The Solar arrays will deliver 8.3 kW of power at the end of the
estimated lifespan of 14.5 year. The launch-mass, prepared for a launch
with an Ariane 4, is calculated to be 3390 kg.
The Turksat 2A will be equipped with 32 Ku-band transponder with
automatic gain control, powered by 110 Watt TWTA (traveling wave tube
amplifier).
Each 16 of these high-powered transponder will be switched onto a fixed
European and an extended Turkey beam; all will be using linear
polarization (H/V).
Initial planning for this system on 42 East was named "Eurasiasat" and
found its strenght in a cooperation between Intelsat, Aerospatiale &
Turk Telekom.
Intelsat (which has retrieved its involvements) planned the
implementation of two additional steerable beams for powerfull coverage
of the North African and Middle Eastern countries, with various options.
(The TVRO Source reported via SATCO-DX the announcement of Turksat 2A
for end 1998 by the General Manager of Turk Telekom, all additonal info
by SME)
SME likes to thank all who were involved lately getting this initial
documentation together.
HOT BIRD's 3,4,5 t.b.l.@ 13 East, http://www.satcodx.com/launches.html
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The Matra Marconi build Eutelsat Hot Birds 2, 3, 4, 5 were initially
supposed to be identical in transmitted power and beam shape.
According to the french Eutelsat Website this is no longer the case.
Hot Bird 2 was equipped with 115 Watt TWT amplifiers, Hot Bird 3, 4 and
the Eutelsat II-f1 replacement: Hot Bird 5, will be powered by 135 Watt
TWT amplifiers, also another 17.4 percent more power!
Combined with the surprisingly positive reports on the unexpected
strenght of the widebeam coverage of the Hot Bird 2, all in all, very
good news for the Middle East.
Best regards,
Henk C. Room / Sat-MidEast / Cairo - Egypt
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