INSAT–3B is the first satellite built under INSAT–3 series of satellites to join INSAT system. It is based on the I-2000 satellite bus. This satellite primarily serves to business communication, mobile communication and developmental communication.it provides the first set to transponders for Swaran Jayanti Vidya Vikas Antariksh Upagraha Yojana (Vidya Vahini) for interactive training and developmental communication. It is 3 – axis body stabilized in orbit using momentum and reaction wheels, solar flaps, magnetic torquers and eight 10 N and eight 22 N reaction control thrusters.
Insat-3B was launched on the 128th flight of European launch vehicle, Ariane of Arianespace, on 21 March 2000, at 23:28 UTC from ELA-3 at Kourou in French Guiana along with its co-passenger, a broadcast satellite, AsiaStar, belonging to a US company, WorldSpace.
Payload
12 extended C-Band Transponders each having a bandwidth of 36 MHz with power of 15 W
Five Ku-band Transponders providing three channels, having a bandwidth of 77/72 MHz with power of 55W
Mobile Satellite Services (MSS) operating in C/S band frequencies
References
^ abcdeMcDowell, Jonathan. "SATCAT". Jonathan's Space Pages. Retrieved 3 May 2018.
Krebs, Gunter. "Insat 3B". Gunter's Space Page. Retrieved 2009-05-02.
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).
