Mass Communications Radio

How many radio stations are there?

13,000+

James Clark Maxwell:

1864 this person discovered the concept of radio waves.

Heinrich Hertz:

1888 this person demonstrated radio waves.

Reginald Fessenden:

1906 this person broadcast the first radio program, recorded Christmas music.

Lee De Forest:

1906 this person invented the audion tube to make voice transmission possible.

Edwin Armstrong:

1939 this person invented static-free radio transmissions using "frequency modulation" waves - FM. Later invented stereo using two soundtracks.

Communication Act of 1934:

Federal Communication Commission.

Communication Act of 1927:

Federal Radio Commission.

What does FM play?

Music.

Radio Act of 1912:

Secretary of Commerece issued licenses.

What brought a rapid decline of radio after World War II?

TELEVISION.

What does AM play?

Talk.

Frequency allocation:

There were so many stations "stepping" on each other, switching frequencies.

David Sarnoff and Guglielmo Marconi:

They were pioneers in radio.

Nathan Stubblefield:

This person experimented with transmitting voice and foresaw radio not merely as a point-to-point communication form, but as a method of transmitting news.

transistor:

a small electronic device containing a semiconductor. a key circuit that paved the way for portability.

audion:

a three-electrode vacuum tube amplifier, which was the basis of the electronic revolution that permitted the development of radio.

wave band:

an electromagnetic wave within the range of radio frequency.

areas of dominant influence (ADI)

area defined by the ratings company Arbitron for purposes of reporting listener data.

traffic:

department that controls movement of programming through the day, logs what goes on the air, and supplies info for billing advertisers.

modulator:

device that processes the carrier wave so that its amplitude or frequency varies. AM is constant in frequency and varies the intensity, or amplitude, of the carrier wave. FM is constant in amplitude and varies frequency of the carrier wave.

Arbitron rating data:

estimates the minimum audiences of various commercial talk radio shows.

AM radio stations send ____ wavelengths:

long

syndicated programming:

nationally produced programming that is supplied to stations through telephone lines and by satellite.

share:

percent of people with their radios on who listen to a station/program

rating:

percentage of all people in a market who listen to a specific station

high fidelity:

reproduction of sound with minimal distortion.

PM radio stations send ____ wavelengths:

short

broadcast radio:

technology of radio airwaves, which was originally conceived as a wireless telephone system or a narrowcast system, reaching a limited number of listeners, became predominantly a medium for sending out signals for wide-area reception by many radio receivers - a mass media system.

Howard Koch:

this person warned us that schools obviously don't teach us to think for our selves and something needs to be changed about that. After War of the Worlds controversy. (People were believing outrageous things).

Guglienlmo Marconi:

this person was the first to make practical application of the physicists' theories; at 21, 1895: rang a bell by remote control by transmitting wireless electromagnetic code.