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Note: These 150x50-px day-in-history logos have been replaced by larger 250x150-px
logos. Please see the individual
Day in Engineering History pages for the new logos. It is a well-know fact that search engine rankings are enhanced when quality websites
contain reciprocal links to each other. If I have listed your company on RF Cafe and
you have not yet provided a reciprocal link, please consider using one of the following
prepared links of either text or a graphic.
RF Cafe does NOT purposely provide links to "keyword magnet" sites that exist
purely to lure searchers onto their website with the sole purpose of flashing ads in
their faces. Those site offer nothing other than a useless list of hyperlinks.
RF Cafe returns very highly, often at the top of the list on page one, for many key
engineering and scientific keyword searches, and is regarded as a "high quality website"
amongst search engines. Having your website
linked to from RF Cafe is a
definite asset for you that I am happy to provide, since I personally control every
listing.
Thank-you. - Kirt Blattenberger
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The easy way to use one of the images is to just place your cursor
over it, right-click and do "Copy," then simply paste it into your HTML page. The hyperlink,
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| RF Cafe |
| RF Cafe - Extensive resource
for science and engineering. |
| RF Cafe - An extensive resource
for RF, wireless, and all aspects of science and engineering. |
| RF Cafe - RF Cafe is a unique
portal of RF, microwave, wireless, and other engineering resources. Vast collection of
equations, references and conversions for electrical, mechanical, physical, and mathematical
fields. Links for vendors, app notes, test notes, ham radio, magazines, books, active
forums, patent and communications standards, technical crossword puzzles, quizzes, and
much more. |
|
RF Cafe - RF Cafe is a unique
portal for RF and microwave engineering resources. There you will find a vast collection
of original content with definitions, equations, references and conversions that cover
electrical, mechanical, physical, chemical and mathematical fields. Many interactive
calculators are available for everything from filters to voltage dividers. In addition,
you will find extensive links to other websites for vendor parts, application notes,
test notes, amateur radio information, technical magazines and books, patent and communications
standards, and much more.
What makes RF Cafe so attractive is the daily headlines, the daily historical events
list, and even technology-themed crossword puzzles that you will find nowhere else. The
Factoids are always an interesting read, no matter what the subject (always relevant),
and some of the Notable Quotes are hilarious. There is always a plethora of new material
added, and is highlighted in the Recent Additions list. Even occasional humor items are
thrown in to add some levity to the workday.
For the job seeker or the employer seeking applicants, the
RF Cafe Jobs page provides a very focused,
popular and professional venue for posting and searching resumes.
Kirt Blattenberger is a degreed RF engineer who runs RF Cafe with a degree of passion
not apparent in the other top “professional” websites. Many people have been surprised
to learn that RF Cafe is not maintained with a full staff of editors and web designers,
but it is not.
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 50 x 150 pixel graphic (2.92
kB) Mole Day - 6:02 am to 6:02 pm on 10/23 October 23
 50 x 150 pixel graphic (1.94
kB) Bulova Accutron 214 Introduced - 1st Electronic Watch October 25, 1960
 50 x 150 pixel graphic (2.29
kB) Maiden flight of the P-51 Mustang October 26, 1940
 50 x 150 pixel graphic (2.15
kB) KDKA Assigned Its Call Letters October 27, 1940
 50 x 150 pixel graphic (2.59
kB) Statue of Liberty (a gift from France) Was Dedicated October 28, 1886
 50 x 150 pixel graphic (2.92
kB) 1st Message Sent via the ARPANET October 29, 1969
 50 x 150 pixel graphic (2.92
kB) "The War of the Worlds" was broadcast. October 30, 1938
 50 x 150 pixel graphic (2.91
kB) Narinder Singh Kapany Born "Father of Fiber Optics" October 31, 1927
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50 x 150 pixel graphic (3.03 kB) Daylight Saving Time Begins 2nd Sunday in
March Ends 1st Sunday in November
 50 x 150 pixel graphic (2.55
kB) 1st Hydrogen Bomb Detonated November 1, 1952
 50 x 150 pixel graphic (3.30
kB) Spruce Goose's 1st and only flight November 2, 1947
 50 x 150 pixel graphic (3.30
kB) Happy Birthday Daniel Rutherford! November 3, 1749
 50 x 150 pixel graphic (2.13
kB) Happy Birthday Benjamin F. Goodrich! November 4, 1841
 50 x 150 pixel graphic (3.81
kB) 1st engineering college in U.S. - Rensselaer (RPI) November 5, 1824
 50 x 150 pixel graphic (2.91
kB) Happy Birthday Marie Curie! November 7, 1867
 50 x 150 pixel graphic (3.30
kB) Happy Birthday Edmond Halley! November 8, 1656
 50 x 150 pixel graphic (2.95
kB) Happy Birthday Carl Sagan! November 9, 1934
 50 x 150 pixel graphic (2.14
kB) United States Marine Corps Established November 10, 1775
 50 x 150 pixel graphic (3.79
kB) Veteran's Day - Honoring All Who Served November 11
 50 x 150 pixel graphic (2.66
kB) Happy Birthday Leo Baekeland November 14, 1863
 50 x 150 pixel graphic (2.85
kB) Intel Introduced the 4004 Microprocessor November 15, 1971
 50 x 150 pixel graphic (3.89
kB) SETI's Arecibo Message Sent November 16, 1974
 50 x 150 pixel graphic (2.78
kB) Alles Gute zum Geburtstag August Möbius November 17, 1790
 50 x 150 pixel graphic (3.39
kB) Happy Birthday Alan Shepard November 18, 1923
 50 x 150 pixel graphic (2.70
kB) Happy Birthday Eileen Collins! November 21, 1956
 50 x 150 pixel graphic (2.12
kB) Microsoft Windows 1.0 Released November 20, 1985
 50 x 150 pixel graphic (2.65
kB) 1st Untethered Manned Hot Air Balloon Flight November 21, 1783
 50 x 150 pixel graphic (3.13
kB) B2 Stealth Bomber Unveiled November 22, 1988
 50 x 150 pixel graphic (2.90
kB) John Wallis - Mr. Infinity - born today November 23, 1616
 50 x 150 pixel graphic (3.05
kB) First Ad Appeared for a Wireless Telegraph Set November 25, 1905
 50 x 150 pixel graphic (4.36
kB) Happy Thanksgiving 4th Thursday in November
 50 x 150 pixel graphic (2.29
kB) Happy Birthday Konosuke Matsushita! November 27, 1894
 50 x 150 pixel graphic (2.61
kB) Happy Birthday Christian Doppler! November 29, 1803
50 x 150 pixel graphic (3.46 kB) Hanukkah 25th day of Kislev (late
November to December)
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 50 x 150 pixel graphic (2.32
kB) Happy Birthday Martin Heinrich Klaproth December 1, 1743
 50 x 150 pixel graphic (2.85
kB) 1st Sustained Fission Reaction at Univ. of Chicago December 2, 1942
 50 x 150 pixel graphic (2.35
kB) Happy Birthday John Backus! December 3, 1924
 50 x 150 pixel graphic (3.14
kB) Happy Birthday Clyde Vernon Cessna! December 5, 1879
 50 x 150 pixel graphic (2.75
kB) Pearl Harbor Day December 7, 1941
 50 x 150 pixel graphic (2.66
kB) Coaxial Cable Patent Day December 8, 1931
 50 x 150 pixel graphic (2.76
kB) Happy Birthday Grace Hopper! December 9, 1906
 50 x 150 pixel graphic (2.17
kB) Happy Birthday Carl Gustav Jacob Jacobi! December 10, 1804
 50 x 150 pixel graphic (2.32
kB) Happy Birthday Sir David Brewster! December 11, 1781
 50 x 150 pixel graphic (2.66
kB) Marconi sent 1st transatlantic radio message dit, dit, dit (•••, the letter
"s") December 12, 1901
 50 x 150 pixel graphic (2.57
kB) Happy Birthday Ernst Werner von Siemens December 13, 1816
 50 x 150 pixel graphic (2.54
kB) Happy Birthday Tycho Brahe! December 14, 1546
 50 x 150 pixel graphic (3.07
kB) Happy Birthday Gustav Eiffel! December 15, 1832
 50 x 150 pixel graphic (2.03
kB) World's 1st Transistor Invented December 16, 1947
 50 x 150 pixel graphic (4.03
kB) Battle of the Bulge December 16, 1944
 50 x 150 pixel graphic (2.70
kB) Anniversary of Powered Flight December 17, 1903
 50 x 150 pixel graphic (3.78
kB) Happy Birthday Edwin Armstrong! Born December 18, 1890
 50 x 150 pixel graphic (2.36
kB) SCORE Satellite Launched December 19, 1958
 50 x 150 pixel graphic (3.28
kB) Robert Van de Graaff Born December 20, 1901
 50 x 150 pixel graphic (3.41
kB) Winter Solstice (1st day of winter)
 50 x 150 pixel graphic (2.96
kB) SR-71 Blackbird Maiden Flight December 22, 1964
 50 x 150 pixel graphic (2.43
kB) 1st Manned Orbit of the Moon by Apollo 8 December 23, 1968
 50 x 150 pixel graphic (2.61
kB) Happy Birthday James Joule! Born December 24, 1818 50 x 150 pixel graphic (2.67
kB) Merry Christmas! Joyeux Noël! Frohe Weihnachten! Buon Natale!
Feliz Navidad! веселое рождество! Καλά Χριστούγεννα!;! メリークリスマス! 圣诞快乐!
عيد ميلاد سعيد! December 25
 50 x 150 pixel graphic (2.73
kB) Happy Birthday Charles Babbage! Born December 26, 1791
 50 x 150 pixel graphic (2.38
kB) Happy Birthday Clemens Winkler! December 26, 1838
 50 x 150 pixel graphic (2.88
kB) Happy Birthday Johannes Kepler! Born December 27, 1571
 50 x 150 pixel graphic (2.51
kB) Admiral Sold the 1st Color Television Set Born December 30, 1953
 50 x 150 pixel graphic (2.12
kB) Last Calvin and Hobbes Comic Strip December 31, 1995
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Many of these logos commemorate people, places, and companies. My intention is to
pay tribute to the significance of each. Images have been gathered from all over the
Internet; ownership, copyright, legal right to use, etc., are all acknowledged when possible,
and are in no way meant to imply any affiliation between RF Cafe and the entity being
referenced. If you object to the use of an image and are the legal owner, please let
me know and I will be glad to remove it.
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