63 Ku-band transponders and a Ka-band capability.
"54 Ku-band, 10 C-band transponders; North, Central and South America."
Technology demonstration and communication.
38 Ku-band transponders.
Will maintain contact with Spanish zone in Antarctica; extremely small magnetic and solar sensors.
"Fourth of Spain's communications satellites with government, commercial and military application; X-band heavily used; 28 Ku-band transponders."