MIT WEEK 1-2 Flashcards
First transatlantic signal sent-by Marconi from ireland to canada
1901
Amateur (today known as “ham”) radio introduced to the u.s. Via a science American article on “How to Construct an Efficient Wireless Telegraphy Apparatus at Small Cost.”
1902
Reginald Fessenden is the 1st to transmit a program of speech and music.
1906
First radio transmission from an airplane
1910
All U.S. radio stations not needed by the government are closed as WWI begins.
1917
The first on-air advertisement was carried by a New York station
1922
The first permanent national network, NBC, was formed. CBS followed a year laters
1926
The Federal Radio Commission established to bring order ro choatic airwaves
1927
FDR broadcast the first of his 30 “fireside chats”
1933
CBS Radio broadcasts H.G. Wells’ classic The War of the Worlds. Although most listeners understood that the program was a radio drama, the next day’s headlines reported that thousands of others – perhaps a million or more – plunged into panic, convinced that America was under a deadly Martian attack.
1938
Cellular radio telephony, with call handoff and frequency reuse, was conceived at Bell Laboratories
1947
Texas Instruments produces the first commercial transistor radio, launching the portable electronic age.
1954
was the earliest form of radio broadcasting. This specific type of broadcasting got it’s name for how it emits radio waves by manipulating the amplitude of the signal in conjunction with the amplitude of the signal that is being transmitted.
AM ( AMPLITUDE MODULATION )
was invented in the 1930s as a way to counter the interference issues with AM radio. FM radio stations happen on VHF (very high frequency) waves and are much more common thanks to better sound fidelity, which allowed stereo broadcasting to thrive on this specific type of broadcasting network.
FM ( FREQUENCY AMPLITUDE )
This type of radio refers to ‘illegal’ or un-regulated radio transmission. Often, this sort of radio broadcasting is used for political reasons, for entertainment, or as an exchange of two-way radio.
Pirate radio
As the name suggests, this is a radio broadcasting serv ice that is produced via satellites. Satellite radios are able to broadcast to a very large geographical area compared to all of its counterparts and was developed to be used primarily in cars.
Satellite radio
-Voice is a crucial element in radio. It can provoke different reactions on the listener depending on its characteristics.
-if we do not care of our voice and the way we speak, we will not make it easy for the listener to understand our message.
Human voice
-Its main aim is to generate appropriate atmosphere so as to make language work on the listener and with the desired objective.
-does not transmit ideas or concrete realities, instead it works on emotions. The listener would understand and
-feel different emotions depending on the images and feeling generated by the music. It is one of them most meaningful elements of the radio language.
Music
is very useful resource to put emphasis and atmosphere to the radio message. However, there is usually not much place for silence in a radio script. Silence can provide a message with tension , emotion and a very deep feelings.
Silence
Are sounds produced by human voice or other things (e.g anim als, objects) which are neither words of music. Noises and effects provoke the listener to imagine, thus they are very important in a radio message.
Sound effects
