SES 1 satellite is scheduled to be launched April 24th 2010 on Proton rocket. It will also replace AMC 2 besides AMC 4.
Here are the specs:
C-Band
Repeater: Two groups of 16-for-12 SSPAs
SSPA Power: 20 W RF
Antennas: 2.3m dual gridded shaped deployable reflector
Ku-Band
Repeater: Two...