Next from the series of Japanese communication satellites built by NEC. With transponders operating on X band, satellite will extend communication capabilities of Japan Self-defense Forces. Both satellites are based on Mitsubishi Electric DS-2000 bus and were offered to Japanese Ministry of Defense as private initiative by NEC. Due the technical specification of DS2000, satellite will be probably operating for at least 15 years. Satellite will be operated by joint venture between Sky Perfect JSAT Corporation, NEC Corporation and NTT Communication Corporation.