The History of Satellites and Radio Frequencies

Wireless computer networks, cellular phones, and satellite dish networks, and the use of microwave frequencies have become a household thing. The following is a brief timeline of Microwave Frequency communications from satellites. Global Warming or Climate Change history from PBS.

The History of Satellites

Radio Astronomy – History of Radio Waves, Microwaves and Infrared Waves

Global Warming or Climate Change and Microwaves chart

NOTE! It is important to state┬áthat correlation does not necessitate causation. The purpose of the timeline is to show Global Warming and Climate change along side the RF and Microwave frequency history. It is not my intent to use the correlation as “proof” that microwaves are causing Global Warming or Climate Change. ┬áThere can be many causes to Global Warming and Climate change along side with Radio and Microwave frequencies.

Year Milestone
  • USA began widely Broadcasting UHF and VHF.
  • First man-made Earth satellite launched by the former Soviet Union.
  • First US satellite launched. First voice communication established via satellite.
  • First communication satellite (passive) launched into space.
  • First active communication satellite launched.
  • Japan and the UK begins UHF and has already established VHF broadcasting.
  • First satellite launched into the geostationary orbit. INTELSAT founded.
  • Roger Revelle helped publish the first high-level government mention of Global Warming or Climate Change.
  • First satellite launched into the geostationary orbit for commercial use.
  • Canada Broadcasts UHF and VHF
  • First domestic satellite system operational (Canada). INTERSPUTNIK founded (1972)
  • First successful direct broadcast experiment (one year duration; USA-India).
  • The National Academy of Sciences issued a study called Energy and Climate (1977)
  • UHF Broadcasting in Ireland
  • International mobile satellite organization (Inmarsat) established
  • Representative Al Gore co-sponsored the first Congressional hearings to study the implications of Global Warming or Climate Change.
  • UHF Broadcasting in Australia.
  • First reusable launch vehicle flight. (American Space Shuttle)
  • Roger Revelle published a widely-read article in SCIENTIFIC AMERICAN addressing the rise in global sea level by the melting of glaciers.
  • International maritime communications made operational
  • First direct-to-home broadcast system operational (Japan)
  • Successful trials of land mobile communications ( Inmarsat)
  • NASA climate scientist James Hansen and his team reported to Congress on Global Warming or Climate Change. (1988)
  • the Intergovernmental Panel on Climate Change (IPCC) was established. (1988)
  • Global mobile communication service extended to land mobile and aeronautical use (Inmarsat)
  • the Global Change Research Information Office (GCRIO) was established.
  • Congress passed and President George Bush signed Public Law 101-606 “The Global Change Research Act of 1990.”
  • Several organizations/companies propose the use of non-geostationary satellite system for mobile communications.
  • the U.N. Conference on Environment and Development. (UNCED or the “Earth Summit”)
  • Plans for provision of service to hand-held telephones by the year 2000 announced by several organizations/companies.
  • Continuing growth of VSATs in diverse regions of the world.WRC allocates new frequencies for mobile satellite communication.
  • Continuing growth of direct broadcast in Asia and Europe.
  • Largest single-year worldwide growth in the numbers of VSATs.
  • Spectrum allocation for non-geostationary satellite system.
  • First successful test of low data rate commercial low Earth orbit satellite system (ORBCOM).
  • Launch of first batch of low earth orbit satellites for provision of voice services to hand-held terminals (Iridium).
  • Voice communication services to desk-top telephone sized mobile terminal launched (Inmarsat).
  • Paging service to pocket-siged terminals launched (Inmarsat).
  • Kyoto Protocol, in which the developed nations agreed to limit their greenhouse gas emissions, relative to the levels emitted in 1990.
  • Introduction of hand-held services via low Earth orbit constellation.
  • Introduction of direct sound broadcasting system.
  • The IPCC released its third assessment report, concluding on the basis of “new and stronger evidence that most of the observed warming over the last 50 years is attributable to human activities.” They also observed that “the globally averaged surface temperature is projected to increase by 1.4 to 5.8 degrees Celsius over the period 1990 to 2100.”
  • The Bush Administration came into conflict with the world community when it appeared to take issue with parts of an eight-nation report compiled by 250 scientists which contended that theArctic is warming almost twice as fast as the rest of the planetdue to a buildup of heat-trapping gases.
  • FCC awards 90 MHz of additional spectrum for advanced wireless services.
  • Delivery of digital wireless data and voice enhanced networks (2.5G) On October 13, 2003
  • 20th Anniversary of Commercial Wireless Communications.
  • Introduction of broadband personal communications.
  • Orbital Debris becomes an issue.
  • Ka band system proliferate.
  • A number of low and medium orbit constellation system operational.
  • The Kyoto Protocol entered into force on February 16, 2005. Industrialized countries have committed to cut their combined emissions to 5% below 1990 levels by 2008 – 2012.



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