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                                         Electronic Communication History at a Glance                                    

The history of electronic communication can be compared with a heavy train. It starts very slowly and after a while he gets faster and faster and faster, and no one can stop him. So it was with the electronic communication. From the invention of the Morse telegraph to the invention of the telephone, it took about 20 years. But from the invention of the Superheat Radio, until the first TV broadcasting took place, it took 10 years. Today, new electronic developments come up in every year. This makes it clear, for electronic people, learning is a continuous challenge.
The following list of electronic communication history, is certainly not perfect, but gives us an idea of how quickly the electronic evolution is.

 Event

Jeahr

 Comment

Country

 

First optical comunication .

-200

Greek parallel code transmission from Arcos to Troya using fire signals.

GR

 

Electrical Phenomena found.

1760

Benjamin Franklin

USA

 

First underwater cable used for signal transmission.

1811

Samuel Thomas Soemmerring.

D

 

First telegraph device is developed.

 

1837

Samuel F.B. Morse.

USA

 

First far transmission underwater cabel.

1858

From Irland to Neufundland. 4500km

?

 

The phone is invented.

1861

 Phillip Rice.

D

 

First picture transmitted on wire.

1862

Giovanni Caselli.

FR

 

The phone is invented.

1876

Alexander Graham Bell.

USA

 

Ohms Law is found.

1826

Georg Simon Ohm.

D

 

Nipkow invents Nipkow’s Disk.

1885

First  scanning of pictures.

D

 

Radio waves have been  found.

1886

Heinrich Rudolf Herz.

D

 

The loudspeaker is invented.

1878

Werner von Siemens.

D

 

The first payphone is installed

1891

Mix und Genest

D

 

First radio wave transmitter.

1893

Marconi.

GB

 

First Radio transmitter. Invention of the high frequency transformer.

1893

Nicola Tesla.

CS; USA

 

Patent for tuned coupled circuits.

1900

Marconi.

GB

 

Vakuum tube triode is invented.

1903

 

 

 

First elerctro medical diathermy

1908

Lorenz

D

 

The katothode ray tube is invented.

1909

Karl Ferdinand Braun .

D

 

First wireless phoneconnection D-USA

1911

Lorenz

D

 

The Superhet radio receiver was created.

1918

Edwin Armstrong  .

USA

 

Theorie of Vakuum tubes explained.

1923

Barkhausen, Heinrich.

D

 

First Color TV Patent.

1925

Zworykin.

D

 

First Broadband Amplifier is developed. Automatic Grid Bias of Tubes is invented.

1925

Prof. Ardenne.

D

 

First short-wave radio.

1925

Abraham Esau.

D

 

First Selen rectifier is developed

1928

Lorenz AG

D

 

Beginning of TV Broadcasting in Europe.

1928

 

D,F,GB

 

Beginning of Mangnetphone development.

1928

Fritz Pfleumer AEG .

D

 

The scanning TV Tube is invented, first TV pictures on a tube.

1930

Prof. Ardenne.

D

 

First microwave phone link.

1932

Marconi .

GB

 

German radio for everybody “Volksempfänger”.

1933

VE 301 Single Tube straight forward receiver with adjustable feedback.

D

 

Precision Frequency meter is developed.

1933

Dr. Hermann Schwarz and Dr. Lothar Rohde  formed a company.

D

 

Frequency modulation is invented.

1933

Edwin Armstrong.

USA

 

First PCB is used in a Radio.

1934

Paul Eisler.

A; USA

 

First high quality Magnetophon.

1935

TELEFUNKEN.

D

 

First microwave guiding systems for Airplanes installed

1935

Lorenz AG

D

 

Beginning of Microwave developmend.

1935

The Waveguide is invented.

 

 

First FM radio stadion.

1937

W1XOJ in Paxton, Massachusetts .

USA

 

Development of UKW FM Radio System in Germany.

 1937

 

 

 

Steel Housing Tubes replace glas Tubes

1938

First Ultra Short Wave tubes’

 

 

First Radar in Germany finds objects 30km far away.

1939

Radar “Würzburg” TELEFUNKEN.

D

 

The Reflexklystron is invented.

1939

Russel Varian .

USA

 

Electronic measurement equipment’s are developed.

1939

Hewlett and Packard.

USA

 

Invention of the Microwave powertube Magnetron.

1940

British physcists  Randall and Bott.

USA

 

Invention of the Traveling Wave tube TWT.

1940

Rudolf Klompfner.

A; GB

 

The first police and fire department radio are istalled

1941

SEL

D

 

9cm on Board Radar

1942

Device Rotterdam finds Submarins

GB

 

First digital computer uses Relays.

1941

Kornrad ZUSE ; Helmut Schreiyer.

D

 

First Radar  in USA is developed (RADAR = RAdio Detection And Ranging).

1943

SCR 584 WESTINGHOUSE .

USA

 

German Radar “Lichtenstein “ found 130 airplanes at once.

1943

 TELEFUNKEN.

D

 

First 3 cm Radar.

1944

 

 

 

First electronic tube computer EINIAC.

1946

University of Pennsylvania.

USA

 

Invention of the Transistor.

1947

Bell Labs.

USA

 

Microwave radio link to Berlin

1948

SEL

D

 

FM Radio in Germany established.

1949

Bavaria Radio Munich.

D

 

Schottky effect found.

1947

Walter Schottky

D

 

First Color TV system developed.The Vidicon camera tube is invented.

1950

RCA.

USA

 

First Germanium Transistors on the market.

1952

2N32 RCA,G11 GE.

D

 

First car radio uses automatic tuning feedback

1953

Becker Radio.

D

 

First Germanium Transistors in Germany.

1955

AC107 VALVO, GFT20 TE-KA-DE .

D

 

Miniaturising of Tubes to only 5 mm diameter , “Penceltubes”.

1955

Popular tubes ..5672...............

 

 

First electronic banking equipments are developed.

1956

Check watching video system TE-KA-DE .

D

+

Beginning of cartelephone “Öffentlich beweglicher Landfunk “ in Germany.

1957

Development of first Unit B70 at TE-KA-DE.

......

D

+

First pocket calculator.

1957

Casio; JAP.

JAP

 

Scattering Microwave directional radio is developed.

 

1958

Microwave beam reflected in heaven, connects BRD and isolated Berlin ,developed at TELEFUNKEN .

D

 

First silicon Transistor fabricated.

1954

Bell Labs chemist Morris Tanenbaum

USA

 

Video watching comes up.

1955

Grundig, Hightrain Hamburg uses Video watching system TE-KA-DE.

D

+

First MOSFET fabricated.

1960

Bell LAB’s.

USA

 

TTL -Integrated circuits developed.

1961

James L. Buie of TRW.

 

USA

 

First Silicon Transistors on the marked.

1962

Popular Types are 2N1613 or 2N2628.

USA

 

First liquid crystal material produces patterns

1962

Richard Wiiliams RCA; USA.

USA

 

First science computer in Germany

1962

TR4 TELEFUNKEN Clock 2Mhz ; 50Mhz storage.

D

+

First communication Satellite in Orbit

1962

Telstar1.

USA

 

Development of Phase alternating PAL at TELEFUNKEN Hannover.

1963

Inventor was Prof. Bruch and team.

D

 

CMOS technology invented.

1963

Frank Wanlass at Fairchild Semiconductor.

USA

 

Switching DC Regulators come up.

1963

Switcher voltage regulator circuits are invented.

 

+

Beginning of color TV in Germany.

1967

 

D

 

First German science computer TR440 uses Transistors and magnetic stores, has terminal and runs with Algol and FORTRAN

1968

Developed at TELEFUNKEN  to be used digitalizing phone network .

D

 

Patents of liquid crystal displays.

1970

Jams Fergason; USA.

USA

 

First Microprozessor on the market.

1971

Intel 4004.

USA

 

 Intelsat 5 communication Satellite international development .

 1971

 International Partcipation.

 

+

Famous CMOS 4000 Series on the market.

1973

 

USA

 

Beginning of TELEFAX .

1973 

 Exxon.

USA

 

 

 

 

 

 

First european French German communication satellite SYMPHONY works in space.

1975

4Ghz 10 W TWTA transponder developed at TELEFUNKEN.

FR; D

+

Famous Table computers come on the market.

1980

HP- 85 40kRAM; Commodore.

USA

 

Direct broadcasting TV Satellite is developed.

1984

DFS Kopernikus ANT.

D

+

 First digital Satellite Radio equipment in Germany developed.

1988

ANT.

D

+

First PC operating software.

1990

Windows 3.0

 

 

World wide Web. is installed.

1991

Tim Berners Lee, GB

GB

 

First Satellite connected Internet home equipment is developed.

1994

ANT-BOSCH Communication.

D

+

First optical satellite communication works in space.

2007

TSAT.

D

 

END

 

 

 

 

   Readings:

  • Friedrich Klemm: Kurze Geschichte der Technik, Herder Verlag.
  • SEL-Taschenbuch 1962.p 22
  • Volker Aschoff,VDE : Optische Nachrichtenübermittlung in klassischen Altertum: NTZ 30 1977.
  • Harlan Howe, Jr. Nova presents Echo of War: Microwave Journal Sept.1989.
  • Die Radarentwicklung währen des Krieges: ? Telefunken Ulm 1970

+ = The Author was involved

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