Thank you for visiting RF Cafe!

Your RF Cafe
Progenitor & Webmaster

Click here to read about RF CafeView the YouTube RF Cafe Intro VideoKirt Blattenberger
BSEE
KB3UON
EIEIO

Carpe Diem!
(Seize the Day!)

5th MOB:
My USAF radar shop

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding website

RF Cafe Software

Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel
RF & EE Symbols Word
RF Stencils for Visio

Day in Engineering History Archive - February 22

February 22

Happy Birthday Heinrich Hertz! Click here to return to the RF Cafe homepage.

1785: Jean-Charles-Athanase Peltier, discoverer of the effect whereby current passing through a junction of dissimilar metals produces heat or cold depending on polarity, was born. 1857: German physicist Heinrich (Rudolf) Hertz, who was the first to broadcast and receive radio waves, was born. 1876: Johns Hopkins University opened for business in Baltimore, MD 1900: Paul Kollsman, inventor of the first accurate barometric altimeter, was born. 1974: Barbara Allen Rainey became the first female aviator in the U.S. Navy. 1994: The Justice Department charged 31-year CIA veteran Aldrich Ames and his wife, Rosario, with selling national security secrets to the Soviet Union (Ames was later sentenced to life in prison; his wife received a 5-year term).

| 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.
Please submit significant historical events and dates for inclusion in these lists. I will be glad to include your name and birthday. Please do not submit your death date ;-) A couple 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.
Copyright 1996 - 2016
Webmaster:  Kirt Blattenberger, BSEE - KB3UON

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.