Ka-band Payload of COMS (Communication, Ocean and Meteorological Satellite) has been operated and used for various purposes. The Ka band payload system, developed by ETRI and launched at 27 Jun. 2010, has been demonstrated reliable stability condition by periodic measurement and confirmed good performance in GEO orbit for two years. Ka band payload system was applied for public communication services including national disaster communication backup network and test bed on advanced satellite multimedia communication services and others. This paper describes stability of operation and application services of Ka band payload system.
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