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Innovative Power Products (IPP) 90 deg Hybrid Couplers

Day in Engineering History Archive - December 30

Day in Engineering History December 30 Archive - RF CafeAdmiral Sold the 1st Color Television Set.  Please click here to visit RF CafeDecember 30

1851: Asa Candler, whose marketing genius made Coca Cola a household name, was born. 1884: The American Metrological Society formed a committee to establish an efficient system of weights, measures and physical units. 1922: Vladimir Lenin proclaimed the establishment of the USSR. 1924: Edwin Hubble announced the existence of other galactic systems. 1927: The first subway in the Orient, the Tokyo Underground Railway, was dedicated in Japan. 1947: Alfred Whitehead, co-author with Bertrand Russell "Principia Mathematica," died. 1953: The first color TV sets went on sale by Admiral for about $1,175. 2006: At a little after 6:00 am, Baghdad time, Saddam Hussein was hanged for crimes against humanity.

| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |

Note: These historical tidbits have been collected from various sources, mostly on the Internet. As detailed in this article, there is a lot of wrong information that is repeated hundreds of times because most websites do not validate with authoritative sources. On RF Cafe, events with hyperlinks have been verified. Many years ago, I began commemorating the birthdays of notable people and events with special RF Cafe logos. Where available, I like to use images from postage stamps from the country where the person or event occurred. Images used in the logos are often from open source websites like Wikipedia, and are specifically credited with a hyperlink back to the source where possible. Fair Use laws permit small samples of copyrighted content.

Innovative Power Products (IPP) 90 deg Hybrid Couplers