Peluang dan Tantangan Pemanfaatan Frekuensi Ka-Band untuk Sistem Komunikasi Satelit [Opportunities and Challenges upon Usage of Ka-band Frequency for Satellite Communication System] - Pradono, Wirianto; Pusliitbang SDPPPI - Balitbang SDM - Kementerian Kominfo (Centre for Research and Development on Resources, Equipment, and Operations of Posts and I, 2017)