1. Universitas Padjadjaran,Departement of Electrical Engineering,Bandung,Indonesia
2. Universitas Sumatera Utara,Departement of Electrical Engineering,Medan,Indonesia
3. Institut Teknologi Bandung,Department of Physics Engineering,Bandung,Indonesia
4. Aircraft Operations of the Indonesian Aviator Academy,Banyuwangi,Indonesia
5. Institut Teknologi Bandung,Departement of Geodetic and Geomaticl Engineering,Bandung,Indonesia