Orbiting Satellite Carrying Amateur Radio(OSCAR)
Amateur Radio Operators (Hams) who share an active interest in building, launching and then communicating with each other through non-commercial Amateur Radio satellites. By any measure, AMSAT’s.Amatuer Radio Satellite Group) track record has been impressive. Since its founding 25 years ago, AMSAT has used predominantly volunteer labor and donated resources to design, construct, and, with the added assistance of international government and commercial agencies, successfully launch, over 30 Amateur Radio satellites into Earth orbit. Today, almost 20 of these satellites are operational. These satellites were generally called as OSCAR (Orbiting Satellite Carrying Amateur Radio).This paper focus on various technical aspects of OSCAR from its history, tracking, accessing up to its technology.
The Space age is barely a half century old .During this time a considerable amount of money is spent on space exploration and the related technologies .The investment has clearly begun pay of-earth satellites are the prime example . For nearly a decade most international telecommunications have been handled by satellite.
Orbiting Satellites Carrying Amateur Radio (OSCAR) series of small satellites was initiated for radio amateurs to experience satellite tracking and participate in radio propagation experiments. The World Administrative Radio Conference (WARC) allocated frequencies for the Amateur Satellite Service Transmitting low-powered signals, initially battery operated and offering short lives, the satellites have become increasingly sophisticated. More recently, they have served school science groups, provided emergency communications for disaster relief, acted as technology demonstrators, and transmitted Earth imagery.
The resourcefulness, ingenuity and skill of the Amateur Radio satellite community in the years have made a fascinating story. Hams have pursued the dream of reliable, predictable, long-distance and long-duration radio communication on different frequencies – from hf to microwaves. Each successive OSCAR has been one more step toward the realization of that dream. This paper covers the basic facts of OSCAR, its tracking, accessing and so on……..
The Space Age, was marked from the launch of Sputnik-I on October 4, 1957. OSCAR-I WAS launched on December 12, 1961.OSCAR –III, the first amateur satellite with a “transponder” was launched on March 9, 1965. In almost 40 years since the launch of first amateur satellite, the related technology has seen great advances, contributing to the exponential growth in the popularity of OSCAR operation.
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