O.S.C.A.R.- Orbital Satellite Communication using Amateur Radio

There are many scientific experiments performed in the NASA’s very own International Space Station, which is the largest Low-Earth Orbiting Satellite, till date. The results of these experiments are needed to be conveyed down to the earth station via Radio Waves. All about the current status of ISS studies and its information is broadcasted all around the globe. Access to this information does not need any licensing authorization from any of the space research organizations. This information can be publically accessed by anyone on Earth. The Project O.S.C.A.R. (Orbital Satellite Communication using Amateur Radio) focuses on the same concept as mentioned above. O.S.C.A.R. is basically one of the basic and simplest ground stations for receiving the signals transmitted from ISS. This project has been subdivided into three stages, viz. Signal Reception, FM demodulation and Audio conversion. This project shall be completed with the fabrication of a simple Yagi Uda antenna resonating at a frequency of 145.800MHz. The antenna is well receptacle to circularly polarize audio signals sent by ISS; a FM demodulator circuit and an audio conversion circuit which would convert the signals to audible sound through speakers. With the help of this project any person around the world can listen to the astronauts and can also setup a scheduled communication link for gaining the information for further explorational. Thus, O.S.C.A.R. would give one of the simplest ways to leap into the domains of modern satellite communication systems and space research.