Thaicom 3

Thailand

Int. spacecraft nº:

Thailand spacecraft nº: 3


Launch data:

Designation 24768 / 97016A
Launch date 16 Apr 1997
Launch site Ko, ELA-2
Launch vehicleAriane-44LP (V95)
MissionTelecommunications
Geostationary orbit:

test slot: 87.5°E

Spacecraft data:

Prime contractor Aerospatiale
Platform Aerospatiale Spacebus-3000
Mass at launch 2650 kg
Dry Mass 1179 kg
Dimension 3.25 x 2.26 x 3.48 m
Solar array 26.27 m span
Stabilization 3-axis
DC power BOL: 6400 W
Design lifetime 14 years

Location:

DatePositionRemarks
 Apr 1997 - Oct 2006  78.5° E 


C-band:

Main transponders 24
Backup transponders  
Power 6 x 42 W
18 x 19 W
Bandwidth 36 MHz
Coverage & EIRP max Quasi global: 37.5 dBW (6 transponders in 3.4 - 3.7 GHz range)
Zone (sub continent): 38 dBW
Polarization linear

ISRO hired 6 transponders to increase their capacity for a year.

C-band transponder frequency chart (GHz)

Horizontal
Downlink
Transponder Vertical
Downlink
Beam
  1VE 3.425 Zone
  2VE 3.465 Zone
3.480 1HE  Quasi global
  3VE 3.505 Zone
3.520 2HE  Quasi global
  4VE 3.545 Zone
3.560 3HE  Quasi global
  5VE 3.585 Zone
3.600 4HE  Quasi global
  6VE 3.625 Zone
3.640 5HE  Quasi global
3.680 6HE  Quasi global
  1VS 3.720 Zone
  2VS 3.760 Zone
  3VS 3.800 Zone
  4VS 3.840 Zone
  5VS 3.880 Zone
  6VS 3.920 Zone
  7VS 3.960 Zone
  8VS 4.000 Zone
  9VS 4.040 Zone
  10VS 4.080 Zone
  11VS 4.120 Zone
  12VS 4.160 Zone

Ku-band

Main transponders 14
Backup transponders  
Power 100 W
Bandwidth 36 MHz
Coverage & EIRP max Thailand: 55 dBW
India (steerable): 50 dBW
Polarization linear
Frequencies 12.25 - 12.75 GHz

Only 38 transponders can be on simultaneously

Ku-band transponder frequency chart (GHz)

Uplink Transponder Downlink Beam
14.0198 55 12.2718 Thailand or steerable
14.0613 56 12.3133 Thailand or steerable
14.1024 57 12.3548 Thailand or steerable
14.1443 58 12.3963 Thailand or steerable
14.1858 59 12.4378 Thailand
14.2273 60 12.4793 Thailand
14.2688 61 12.5208 Thailand
14.3103 62 12.5623 Thailand
14.3513 63 12.6038 Thailand
14.4055 64 12.6575 Thailand
14.4681 65 12.7201 Thailand
14.2066 66 12.4586 steerable
14.2481 67 12.5001 steerable
14.2896 68 12.5416 steerable

Ref.: #7(JR726), #15 - update: 03.06.16 Home