GE-4 --> AMC-4

USA

Renamed: AMC-4 (Americom-4)

Launch data:

Designation: 25954 / 99060A
Launch date13 Nov 1999
Launch site Ko, ELA-2
Launch vehicle Ariane-44LP (V123)
MissionCommercial: Communications
Geostationary orbit:
Perigee / Apogee 35781 x 35791 km
Eccentricity 1,19E-04
Inclination 0.01 deg
Period 1436.1 min

Specifications

Prime contractorLockheed Martin Commercial Space Systems
PlatformA2100AX
OperatorSES Americom
Mass at launch 3909 kg
Dry mass 2500 kg
Dimension 1.83 x 1.85 x 2.64 m
Solar array 26.8 m span
Stabilization 3-axis
DC power BOL: 6000 W
Design lifetime 15 years

Location:

BeginPositionRemarks
 April 2009 100.99° W 

Mission:

Broadcasting, cable, internet; CONUS, Canada, Mexico, Caribbean, Central America, South America; 28 Ku- and 24 C-band.
Tested from 72°W. Became operational on 03 Jan 2000, replaced ASC 2. Was originally planned to be launched by Proton

C-band

Main transponders 24
Backup transponders 8
Power 20 W
Bandwidth 36 MHz
Coverage Conus, Canada, Mexico, Caribbean
EIRP max 40 dBW
G/T max  
Polarization linear H/V
Beacons 3.7005 GHz H & 4.1995 GHZ V

Ku-band

Main transponders 28
Backup transponders 8
Power 110 W (TWTA)
Bandwidth 24 x 36 MHz
4 x 72 MHz
Coverage US, Hawaii, Canada, Mexico
Central-South America
EIRP max 51 dBW
G/T max  
Polarization linear H/V
Beacons 11.702 GHZ V & 12.198 GHz H

Ku-band transponders are individually switchable between North American and South American coverage

Ku-band Transponder frequency chart (GHz)

Horizontal
Uplink 		Horizontal
Downlink 		Transponder Vertical
Downlink 		Vertical
Uplink 		Notes
13.875   25 11.575   54 MHz
  11.575 26   13.875 54 MHz
13.955   27 11.655   54 MHz
  11.655 28   13.955 54 MHz
           
14.020   1 11.720    
  11.740 2   14.040  
14.060   3 11.760    
  11.780 4   14.080  
14.100   5 11.800    
  11.820 6   14.120  
14.140   7 11.840    
  11.860 8   14.160  
14.180   9 11.880    
  11.900 10   14.200  
14.220   11 11.920    
  11.940 12   14.240  
14.260   13 11.960    
  11.980 14   14.280  
14.300   15 12.000    
  12020 16   14.320  
14.340   17 12.040    
  12060 18   14.360  
14.380   19 12.080    
  12100 20   14.400  
14.420   21 12.120    
  12.140 22   14.440  
14.460   23 12.160    
  12.180 24   14.480  

Ref: #7, #15, #226 - update: 24.08.09