CS101 Chapter 4-Radio Week 4
Influence of Radio
-Radio is everywhere. The signals carried on the electromagnetic spectrum to almost every nook and
-This was especially evident during the 2003 blackout when people turned their portable radios on to listen
-“Radio is a perfect fit for modern life; it’s effortless, easy to listen to during other activities; entertains and
informs throughout the day; is compatible with other media and provides a soundtrack for life”.
-The audience is slipping from the traditional stations to iPods, direct to listener satellite services, webcasts
and cell phones
-Canadians aged 12-34 are listening to less radio than in the past
-Energy waves on which radio messages are piggybacked.
-As early as 1873, physicists speculated that the electromagnetic spectrum existed, but it was an Italian
nobleman, Guglielmo Marconi, who made practical application of the physicists’ theories while living in
-In 1906, Lee de Forest, a promoter who fancied himself as an inventor, created what he called the audion
tube to make voice transmission possible.
Which Came First: XWA or KDKA?
-KDKA-First licensed radio station in the United States. Originated in Pittsburgh, in 1920.
-XWA-Canada’s first radio station (now 940 news) based in Montreal in 1918
-Static free transmission was developed by Edwin Armstrong
-In 1939 Armstrong built an experimental station in New Jersey using a new system called frequency
-CHFI in Toronto was Canada’s first FM station
-Satellite Radio-delivery method of programming from a single source beamed to an orbiting satellite for
transmission directly to individual end-users. Provides quality sound, and much of it is commercial free.
-Terrestrial-traditional name for over-the-air radio stations
-iPod-handheld MP3 players which siphoned listeners from over-the-air local radio. People are able to
create their own playlists
-Podcasting-anybody who wanted to create a show could prerecord a batch of favourite music, complete
with narration, as an audio file on a personal computer
-Webcasting-many Canadian radio stations stream their signals on the web.
-in order to cut costs to maximize profits, big radio chains consolidated their new properties in the post- CS101 Chapter 4-Radio Week 4
1996 era and centralized not only playlists but also disc jockeys
-Through a system called voice tracking, a handful of announcers can be heard on several radio stations,
owned by the same company, in different markets.
-Ex. Jack in Canada owned by Rogers Media of Canada