Jurnal Sains Dirgantara (Journal Aerospace Sciences) Vol. 14 No. 1, Desember 2016 : *Perbandingan karateristik aktivitas sintilasi ionosfer di atas manado, pontianak dan bandung berdasarkan data gistm (charateristics comparison of ionospheric scintillation activities over manado, pontianak and bandung based on gistm data , Sri ekawati, sefria anggarani, dan dessi marlia , 1-16 *Estimasi bad…