The European Mobile System payloads for personal and mobile communications

This paper describes the characteristics of the Alenia Spazio payloads providing L-band personal and mobile communications services. The characteristics of a satellite under study for mobile communications at Ka and EHF band are described too. The payloads are: EMS, LLM and SECOMS. EMS (European Mobile System) is an ESA payload embarked on the Italian satellite ITALSAT F2. It will be the first in orbit element of an European Land Mobile Satellite Communication System. LLM (L-band Land Mobile) is a payload that will be embarked on the European Spacecraft ARTEMIS and will be used to increase the EM3 payload capabilities. SECOMS (Satellite EHF Communications for Multimedia-Mobile Services) is a satellite under mobile and personal communications at Ka and EHF band.