January

Jan. 1, 1983

ARPANET switches from NCP to TCP/IP

Jan. 1, 1997

EAS rules go into effect

Jan. 3, 1929

Paley incorporates Columbia Broadcast System

Jan. 4, 1923

WEAF and WNAC conduct first wired simulcast

Jan. 5, 1932

The Shadow debuts on CBS

Jan. 5, 1940

Armstrong demonstrates FM to the FCC

Jan. 5, 1979

FCC eliminates Third Class operator requirement for stations

Jan. 6, 1838

Morse Code privately demonstrated

Jan. 6, 2004

First IBOC radio receiver commercially sold. Location: Cedar Rapids, IA

Jan. 8, 1918

President Wilson 14 Points speech aired worldwide

Jan. 8, 1927

Commercial transatlantic telephone service inaugurated between Newy York and London

Jan. 8, 1993

NRSC OKs RBDS standard

Jan. 9, 1943

Nicola Tesla dies

Jan. 9, 1958

John Tukey coins term "software" in American Mathematical Monthly

Jan. 10, 1987

NRSC-1 goes into effect to establish AM emphasis/de-emphasis curves

Jan. 12, 1949

Claude Shannon proves mathematics of Nyquist Theorem.

Jan. 12, 1995

FCC designates 2.31 to 2.36GHz for S-DARS use

Jan. 18, 1983

First GUI/mouse computer, the Apple Lisa, unveiled.

Jan. 19, 1943

FCC endorses Restricted Radio Operator Permits

Jan. 20, 2000

FCC creates LPFM

Jan. 24, 1984

Apple introduces the Macintosh 128K

Jan. 29, 1929

de Forest patents Audion tube

Jan. 31, 1958

U.S. launches its first satellite, Explorer I

February

Feb. 1, 1949

45 rpm discs are introduced by RCA Victor

Feb. 2, 1982

Intel intros 80286 processor

Feb. 2, 2009

WODS-FM Boston launches 1,000th HD Radio multicast stream.

Feb. 3, 1927

President Calvin Coolidge signs Public Law 632, the Radio Act of 1927, to create the Federal Radio Commission

Feb. 5, 1916

Alexanderson successfully tests multiple tuned antenna

Feb. 6, 1929

RCA Victor formed.

Feb. 7, 1915

First train-to-station radio message, Binghamton, NY

Feb. 7, 1958

Advanced Research Projects Agency (ARPA) is formed

Feb. 8, 1996

Telecommunications Act deregulates ownership

Feb. 9, 1934

FCC grants 500kW license to WLW for W8XO

Feb. 14, 1946

First ENIAC computer demonstration

Feb. 17, 1947

VOA begins transmissions to Soviet Union

Feb. 19, 1878

Edison receives patent for phonograph

Feb. 19, 1975

Harris introduces the first solid-state radio transmitter

Feb. 23, 1927

Radio Act of 1927 is approved

Feb. 24, 1942

VOA begins operations from New York City

Feb. 26, 1934

President F.D. Roosevelt urges Congress to create the Federal Communications Commission

Feb. 28, 1927

President Coolidge creates Federal Radio Commission

March

Mar. 1, 1949

First 45 rpm record issued by RCA: Texarkana Baby by Eddy Arnold

Mar. 1, 1972

Intel introduces 8008 processor

Mar. 2, 1897

Marconi granted first wireless patent

Mar. 3, 1843

President Tyler signs Telegraph Appropriation Bill.

Mar. 4, 1910

DeForest experimental radio broadcast from Met, NY

Mar. 4, 1925

First radio Presidential inauguration (Coolidge)

Mar. 4, 1982

FCC allows industry to select AM stereo standard

Mar. 5, 1927

Federal Radio Commission holds first meeting

Mar. 5, 1998

Digital Radio Mondiale forms in China

Mar. 7, 1876

Bell receives U.S. patent for telephone

Mar. 8, 1979

Audio Compact Disc prototype is first demonstrated

Mar. 10, 1876

Bell successfully transmits by telephone

Mar. 10, 1922

'Radio Sweeping Country-Million Sets in Use' is the headline in Variety

Mar. 11, 1948

Audio Engineering Society founded in New York City

Mar. 12, 1933

President Franklin Roosevelt gives first radio Fireside Chat

Mar. 15, 1679

Gottfried Wilhelm von Leibniz describes binary numbering

Mar. 17, 1990

ARPANET (forerunner to Internet) ceases to exist.

Mar. 19, 1918

Standard Time Act establishes Standard and Daylight time in the U.S.

Mar. 19, 1928

Amos n' Andy debuts on WMAQ, Chicago

Mar. 20, 1902

Stubblefield demonstrates ship-to-shore broadcast to multiple receivers

Mar. 21, 1952

Alan Freed hosts first rock concert, the Moondog Coronation Ball, at the Cleveland Arena

Mar. 22, 1993

Intel intros Pentium processor

Mar. 26, 1975

The first Altair 8800 personal computer ships

Mar. 27, 1899

Marconi transmits across English Channel

April

Apr. 2, 1974

Intel intros 8080 processor

Apr. 2, 1997

FCC auctions first S-DARS licenses to CD Radio and American Mobile Radio Corp.

Apr. 5, 1964

First official SBE meeting held in Chicago

Apr. 6, 1875

Bell granted patent for multiple telegraph

Apr. 8, 1948

Ampex delivers first audio tape recorder, the Model 200, to Bing Crosby Enterprises.

Apr. 9, 1860

Edouard-Leon Scott de Martinville invents the phonautogram to record sound

Apr. 10, 1989

Intel intros 486 processor family

Apr. 16, 2005

NRSC adopts NRSC-4 (United States RBDS) and NRSC-5 (United Sates IBOC) standards

Apr. 17, 1934

WLW licensed to operate at 500kW

Apr. 19, 1928

Harry Nyquist publishes Nyquist Sampling Theorem

Apr. 19, 1965

Gordon Moore describes Moore's Law

Apr. 20, 1961

FCC authorizes FM stereo standard

Apr. 22, 1993

Mosaic, the first Web browser, is released

Apr. 25, 1874

Guglielmo Marconi born

Apr. 27, 1791

Samuel Morse born

May

May 2, 1934

WLW begins operation with 500kW transmitter

May 3, 1971

All Things Considered debuts

May 4, 1920

RCA holds first meeting

May 9, 1932

WFLA/WSUN, Clearwater, FL, tests first directional antenna in the U.S.

May 11, 1998

Lucent Digital Radio created

May 12, 1908

Stubblefield granted patent for wireless telephone

May 12, 1941

Konrad Zuse displays the Z3 program-controlled (freely programmable) computer

May 15, 2001

XM Satellite Radio completes satellite system

May 20, 1901

Fessenden applies for high-frequency dynamo patent

May 22, 1990

Microsoft releases Windows 3.0

May 24, 1844

Morse telegraphs, "What hath God wrought?" from Washington to Baltimore

May 26, 1903

Fessenden granted patent for the liquid barretter microphone

June

June 1, 1961

FM stereo begins use

June 1, 1979

Intel intros 8088 processor

June 1, 1988

NRSC-2 goes into effect to establish AM transmission mask

June 2, 1896

Marconi files full specs for first wireless patent

June 7, 1932

FCC issues CP for WLW to build W8XO for 500kW

June 8, 1978

Intel intros 8086 processor

June 14, 1922

WEAR, Baltimore, broadcasts President Harding's speech at the dedication of the Francis Scott Key Memorial, the first time a U.S. president has been broadcast live.

June 14, 1983

Docket 80-90 creates new FM stations

June 15, 2000

TDGA- Traffic Director’s Guild of America Founded (Atlantic City, NJ)

June 15, 1945

NBC Blue Network becomes the American Broadcasting Company

June 16, 1934

Armstrong transmits FM signal 70 miles from Empire State Building to Long Island

June 19, 1934

Communications Act of 1934 creates Federal Communications Commission

June 20, 1948

33-1/3 rpm discs are introduced by Columbia

June 23, 1891

Tesla granted patent 454,622: coupled tuned circuit radio-frequency oscillator

June 24, 1910

Public Law 262, titled "Act to require apparatus and operators for radio communication on certain ocean steamers," requires Commerce Dept. to license radio operators for ocean-going ships

June 29, 1904

Edison receives patent for alkaline battery

July

July 1, 1911

Radio Division of Department of Commerce created

July 1, 1920

GE and AT&T sign cross-license agreement

July 1, 1923

WMAF and WEAF create first network

July 1, 1934

Federal Communications Commission replaces Federal Radio Commission

July 1, 2002

Sirius Satellite Radio begins service

July 4, 1970

Casey Kasem first hosts American Top 40

July 9, 1879

Bell Telephone Company founded

July 9, 1992

First AM HD Radio transmission (on 1660 from Xetron, Cincinnati)

July 10, 1856

Nicola Tesla born

July 12, 2000

USA Digital Radio and Lucent Digital Radio merge to form Ibiquity Digital

July 16, 1961

Leonard Kleinrock publishes concept of packet switching.

July 17, 1934

FCC adopts Order No. 1

July 20, 1897

The Wireless Telegraph and Signal Company is founded in England

July 20, 1937

Marconi dies

July 24, 1939

The first experimental FM stations go on the air

July 27, 1940

Billboard publishes first recorded music sales chart

July 31, 2001

ABC ends DAT/SEDAT satellite transmission

August

Aug. 1, 1981

MTV begins operations; first video aired: The Buggles, Video Killed the Radio Star

Aug. 7, 1981

FCC establishes General Radiotelephone Operator License, ceases issuing First and Second Class Operator licenses.

Aug. 12, 1877

Edison invents phonograph

Aug. 12, 1902

Fessenden granted patent for hot-wire barretter

Aug. 12, 1981

IBM introduces PC with MS-DOS

Aug. 13, 1912

Radio Act of 1912, titled An Act to Regulate Radio Communication, is approved

Aug. 15, 1794

First semaphore-telegraph announces victory of France over Austria

Aug. 17, 1982

First audio CDs are manufactured (a recording of Richard Strauss' Alpine Symphony)

Aug. 18, 1937

FCC issues first FM construction permit to W1XOJ, Boston. Station signs on in 1941 as WGTR.

Aug. 27, 1910

James McCurdy sends first aircraft-to-ground wireless message

Aug. 28, 1922

WEAF New York airs first commercial ("This program brought to you by...")

September

Sept. 2, 1969

Internet forerunner ARPAnet begins operation

Sept. 9, 1958

Stereo records and phonographs introduced.

Sept. 11, 2001

Terrorist attack on New York City silences four FM and nine TV stations

Sept. 12, 1958

Kilby and Noyce unveil first integrated circuit

Sept. 12, 2001

XM Satellite Radio begins broadcasting

Sept. 13, 1956

IBM RAMAC 305 computer hard drive developed

Sept. 14, 2007

FCC allows AM IBOC operation at night (MM Docket 99-325)

Sept. 15, 1921

Westinghouse's WBZ, Springfield, MA, receives broadcast license

Sept. 15, 1934

Mutual Broadcast System forms

Sept. 15, 1965

8-track players marketed

Sept. 17, 1995

BBC begins Eureka-147 DAB broadcasts

Sept. 18, 2006

WIYY-FM, Baltimore, becomes the 1,000th station to commence HD Radio transmissions

Sept. 20, 1956

First multistage rocket, the Jupiter C, launched

Sept. 21, 1994

First mobile AM HD Radio reception; transmitted from Xetron, Cincinnati over a distance of about 6 miles

Sept. 22, 1899

DeForest seeks employment with Marconi

Sept. 29, 1926

NBC incorporated

Sept. 29, 1936

First use of radio broadcasts for a US presidential campaign

Sept. 29, 1992

First FM HD Radio broadcast: WILL-FM, Urbana, IL

October

Oct. 1, 1982

First CD players are sold in Japan

Oct. 2, 1995

FCC eliminates licensed operator requirements

Oct. 3, 1938

Alec Reeves patents Pulse Code Modulation (French Patent 852,153 filed Oct. 3, 1938)

Oct. 3, 1942

First successful rocket launch starts space age

Oct. 3, 1837

Morse files a caveat on the telegraph with U.S. Patent Office

Oct. 4, 1957

Sputnik is launched

Oct. 4, 1983

President Reagan signs Radio Marti into law

Oct. 7, 1970

Intel introduces computer memory chip.

Oct. 15, 1990

NRSC-3, recommendations for AM receiver specifications, is adopted

Oct. 17, 1985

Intel intros 386 processor family

Oct. 17, 1919

RCA established

Oct. 23, 2001

Apple introduces Ipod

Oct. 27, 1920

KDKA granted broadcast license

Oct. 30, 1745

Invention of the Leyden jar (the first capacitor) by Dean Ewald Jurgen von Kleist of the Cathedral of Cammin

Oct. 30, 1938

Radio Mercury Theater performs The War of the Worlds; panics listeners

November

Nov. 1, 1926

NBC begins operations

Nov. 1, 1987

Microsoft releases Windows 2.0

Nov. 1, 2006

NPR launches Content Depot

Nov. 2, 1920

KDKA broadcasts election results.

Nov. 2, 1920

The first radio receivers sold

Nov. 4, 1916

Sarnoff proposes "radio music box" for radio reception

Nov. 10, 1992

First AM HD Radio broadcast with audio codec

Nov. 13, 1975

SBE adopts Certification Program

Nov. 14, 1994

FCC adopts EAS rules

Nov. 15, 1899

Transatlantic Times receives first news by wireless

Nov. 15, 1926

NBC makes its first network broadcast

Nov. 15, 1971

Intel intros 4004 processor

Nov. 15, 1985

Microsoft intros Windows 1.0

Nov. 16, 1904

Fleming patents thermionic tube (diode tube)

Nov. 19, 1954

First mass-market transistor pocket radio introduced, the Regency TR-1.

Nov. 22, 1899

Marconi Wireless Telegraph Company of America registered

Nov. 23, 1993

FCC makes C-QUAM AM stereo standard

Nov. 28, 1925

The WSM Barn Dance (later renamed The Grand Ole Opry) debuts on WSM, Nashville

Nov. 29, 1929

NBC begins use of the chimes

December

Dec. 1, 1995

FCC eliminates Restricted Radiotelephone Operator Permit requirement to operate a broadcast station

Dec. 6, 1923

President Coolidge makes the first presidential address on U.S. radio

Dec. 7, 1938

The St. Louis Dispatch begins a two-year experiment to deliver newspapers by radio facsimile

Dec. 9, 1968

Douglas Engelbart demonstrates the computer mouse

Dec. 12, 1901

Marconi receives first trans-Atlantic wireless signal

Dec. 12, 1960

Laser invented

Dec. 14, 1877

Ernst Siemens patents the first loudspeaker

Dec. 15, 1961

John Battison calls for Institute of Broadcast Engineers in Broadcast Engineering editorial

Dec. 16, 1925

Dynamic loudspeaker is designed by Chester Rice and Edward Kellogg.

Dec. 18, 1958

U.S. launches SCORE (Signal Communication by Orbiting Relay Equipment) to transmit radio message from President Eisenhower, effectively becoming the first communications satellite

Dec. 20, 1991

USA Digital Radio created

Dec. 22, 2000

Sirius Satellite Radio completes satellite system

Dec. 24, 1898

First ship-to-shore message sent

Dec. 24, 1906

Fessenden transmits first distant voice/music broadcast

Dec. 27, 1947

Bell Labs invents transistor