Heinrich Rudolf Hertz Birthday February 22, 1857

Heinrich Rudolf Hertz was born this day February 22, 1857.  Hertz was a physicist who clarified and expanded the electromagnetic theory of light that had been put forth by Maxwell.  He was the first to conclusively prove the existence of electromagnetic waves by engineering instruments to transmit and receive radio pulses using experimental procedures that ruled out all other known wireless phenomena.

Heinrich Rudolf Hertz

Good DX and 73, NJ2X

Lee De Forest Birthday August 26, 1873

Lee De Forest was born on this day August 26, 1873.  De Forest was an electrical engineer and inventor of the Audion tube with three electrodes instead of two in 1907.  The tube became known as the De Forest valve or triode.  His innovation made electronic amplification and switching possible.  The Audion Tube was a huge commercial success

Lee De Forest

Good DX and 73, NJ2X

Jean Shepherd (K2ORS) Birthday July 26, 1921

Today we remember the great radio personality, writer, and storyteller Jean Shepherd (K2ORS) who was born on this day July 26, 1921.

Jean Shepherd

Nikola Tesla's Birthday July 10, 1856

Today we remember Nikola Tesla on his birthday.  Tesla was born on July 10, 1856 and forever left his mark on the world through his invention and vision.

Tesla and spiral coil of his high-frequency transformer at East Houston St. 46, New York.

Good DX and 73, NJ2X

Chet Atkins (W4CGP) Birthday June 20, 1924

We remember the great Chet Atkins (W4CGP) born on this day June 20, 1924.  Chet Aktins was a "Certified Guitar Picker", Amerircan guitarist, and record producer.

Robert Moog (K2AMH) Birthday May 23, 1934

Today we celebrate the birthday of Robert Moog (K2AMH) who was born this day May 23, 1934.



Bob Ufer Birthday - Go Blue

Growing up in Michigan, we regularly listened to Michigan football games broadcast on AM radio and announced by the great Bob Ufer.  Bob announced Michigan football games for 36 years.  His announcing style was unlike anything we have ever heard before or since.  Bob's enthusiasm and excitement for "Meechigan" football was positively infectious.

Bob Ufer

Bob Ufer was born this day on April 1, 1920 in Pittsburgh, PA.

Listen to Bob Ufer announcing the 1979 IU vs. U of M during Anthony Carter's touch down leading U of M to win (27-21).

Go Blue! NJ2X

Ohm's Birthday

Georg Simon Ohm was born on this day, March 16, 1789.  Ohm was the dicoverer of Ohm's Law (E = I * R).

Georg Simon Ohm

K7UGA Barry Goldwater's Birthday January 2, 1909

Today we remember the great Senator Barry M. Goldwater (K7UGA) who was born on this day January 2, 1909.

 


Edwin Howard Armstrong's Birthday December 18, 1890

The great American inventor and electrical engineer, Edwin Howard Armstrong was born this day - December 18, 1890.  Armstrong held 42 patents and invented the frequency modulation (FM) radio, hyterodyne radio, superheterodyne radio, and regengerative radio receiver.

Christian Doppler - Birthday November 29, 1803

Today, we remember the mathematician and physicist Christian Doppler who was born on this day November 29, 1803.  Doppler proposed that the observed frequency of a wave depends on the relative speed of the source and the observer.  The Doppler effect occurring with sound waves was verified in 1845 by Buys Ballot.


Christian Doppler

Amateur radio operators encounter the Doppler effect (or Doppler shift) when working with satellite transmissions.  Satellites travel at very high speeds relative to a terrestrial observer -   The Doppler shift is particularly pronounced at the higher VHF and UHF bands.  The Doppler shift in satellite communications is also a function of the flight path.  An approaching satellite is shift higher in frequency.  As the satellite passes directly over the observer the frequency shift is zero.  Then as the satellite moves away from the observer the frequency shifts lower.

Happy Birthday Joe (WB6ACU)

Joe Walsh (WB6ACU) was born this day November 20, 1947.  Happy Birthday Joe!

Michael Faraday Birthday September 22, 1791

Michael Faraday was born on this day September 22, 1791.  Faraday researched and experimented with electricity. He eventually showed that a magnetic field could induce a current in a coil of wire, which became the basis for the generation of electricity.  His theory of electromagnetic induction eventually became "Faraday's Law".  He invented the earliest electrical motors (homopolar motor) which would prove to be one of the most important inventions in history.

Variable Capacitor Schematic Symbol (capacitance is measured in farads)

 

Faraday experimented with sending electrical currents through chemicals, discovering that molecules could be separated into gases and defining principles for the laws of electrolysis.  Faraday was prolific and engaged with the study of optics, magnetism, environmental science, education, light houses, and other interests.

The SI unit of capacitance, the farad, is named in his honor as is the Faraday Cage.

225th anniversary of the signing of the U.S. Constitution

Today we celebrate the 225th anniversary of the signing of the U.S. Constitution.  The Constitution was adopted on September 17, 1787, by the Constitutional Convention in Philadelphia, Pennsylvania.

Have you read this inspired document lately?  Have your government representatives read it?





David Packard (9DRV) - Birthday September 7, 1912

Today we remember David Packard (9DRV) on his birthday (born September 7, 1912, in Pueblo, Colorado). Packard was the co-founder and a longtime executive officer of Hewlett-Packard Company. Packard was a gifted electrical engineer.  He built his first radio while still in elementary school and earned his amateur radio ticket while in high school.

David Packard

Hiram Percy Maxim's Birthday September 2, 1869

Hiram Percy Maxim was born this day on September 2, 1869.

Lee De Forest Birthday August 26, 1873

Lee De Forest was born on this day August 26, 1873.  De Forest was an electrical engineer and inventor of the Audion tube with three electrodes instead of two in 1907.  The tube became known as the De Forest valve or triode.  His innovation made electronic amplification and switching possible.  The Audion Tube was a huge commercial success

Nikola Tesla's Birthday July 10, 1856

Today we remember Nikola Tesla on his birthday.  Tesla was born on July 10, 1856 and forever left his mark on the world through his inventions and vision.

Tesla and spiral coil of his high-frequency transformer at East Houston St. 46, New York.

Guglielmo Marconi's Brithday April 25, 1874

Guglielmo Marconi's was born this day on April 25, 1874 and changed the world forever with his groundbreaking work in radio.

Guglielmo Marconi, 1908

Heinrich Rudolf Hertz Birthday

Heinrich Rudolf Hertz was born this day February 22, 1857.  Hertz was a physicist who clarified and expanded the electromagnetic theory of light that had been put forth by Maxwell.  He was the first to conclusively prove the existence of electromagnetic waves by engineering instruments to transmit and receive radio pulses using experimental procedures that ruled out all other known wireless phenomena.

Heinrich Rudolf Hertz