Skip to main content


First Transpacific Reception of a Television (TV) Signal via Satellite
Society: IEEE Main Category: Electric Sub Category: Era: 1960-1969 DateCreated: 1963 Ibaraki Satellite Communication Center Takahagi State: Zip: 318-0022 Country: Japan Website:,_1963 Creator:

On 23 November 1963, this site received the first transpacific transmission of a TV signal from Mojave earth station in California, U.S.A., via the Relay 1 communications satellite. The Ibaraki earth station used a 20m Cassegrain antenna, the first use of this type of antenna for commercial telecommunications. This event demonstrated the capability and impact of satellite communications and helped open a new era of intercontinental live TV programming relayed via satellite.

Image Credit: Image Caption: Artist's vision of NASA Relay 1 satellite Era_date_from: 1963
Society: IEEE Main Category: Electric Sub Category: Era: 1920-1929 DateCreated: 1924 Tohoku University Sendai-shi State: Zip: Country: Japan Website:,_1924 Creator: Hidetsugu Yagi, Uda, Shintaro
Beginning in 1924, Professor Hidetsugu Yagi and his assistant, Shintaro Uda, designed and constructed a sensitive and highly-directional antenna using closely-coupled parasitic elements. The antenna, which is effective in the higher-frequency ranges, has been important for radar, television, and amateur radio. The antenna system, using a driven element with closely coupled parasitics (usually a reflector and one or more directors) for short-wave work, was first described by S. Uda, a professor at Tohuku University in Japan, in 1926, in the IEEJ (Japan). A colleague, Professor H.
Image Credit: Courtesy IEEE Image Caption: The Yagi-Uda directive short wave antenna Era_date_from: 1924
Society: IEEE Main Category: Electric Sub Category: Era: 1930-1939 DateCreated: 1930-1945 Tokyo Institute of Technology Nikaho State: Zip: Country: Japan Website:,_1930-1945 Creator: Takei, Takeshi
Dr. Takeshi Takei, the professor at the Tokyo Institute of Technology, discovered that composite oxides containing zinc and iron have distinguished magnetic properties. In 1930, Prof. Takei submitted a paper on his work to Japanese Electro-chemical Society and also presented a paper at 57th General Meeting of American Electrochemical Society in St. Louis. That same year, Prof. Takei applied a patent for his discovery, which was granted in 1932(Japan PAT-98844). Tokyo Denki Kagaku Kogyo (now TDK Corporation) was founded in 1935 to commercialize this newly invented ferrite cores.
Image Credit: Courtesy Tokyo Institute of Technology Image Caption: A replica of the early soft-ferrite core. Era_date_from: 1930
Subscribe to Antennae

We hope you enjoyed this essay.

Please support this 70-year tradition of trusted historical writing and the volunteers that sustain it with a donation to American Heritage.


Stay informed - subscribe to our newsletter.
The subscriber's email address.