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Early Days of Television
Transcript of Early Days of Television
TV made its “official” American debut at the 1939 World’s Fair
But, development of television soon came to a quick and grinding halt for years
What could cause such a quick stop to developing such a revolutionary invention?
World War II (1939-1945)
During this time U.S. industry moved into large-scale production of armaments and related war materials.
Television's Boom! Too much, too fast
- Once the war ended, some 70 stations immediately went on the air.
- Things expanded rapidly until 1948. Where TV ran into the same problems that radio ran into in the early days. Too many stations, not enough airspace
-When television first came into being, the FCC provided space for it on the electromagnetic spectrum in the VHF or Very High Frequency range
-The VHF range only runs from 2-13, so obviously there wasn’t enough space for all the new TV stations.
Not knowing what to do, the FCC instituted a 4 year ban on granting TV broadcasting licenses (1948-1952)
- The solution the FCC came up with was to authorize the use of a whole new group of channels.
In 1952, they launched UHF television (ultra high frequency, channels 14–83) and lifted the freeze.
- This gave TV stations a lot of options for channels, giving plenty of space on the spectrum
When the FCC forced broadcaster to switch from analog to digital broadcasting in 2009, the frequency space for channels 52-83 was no longer needed
The government sold that space on the spectrum at auction
The invention of UHF freed up space, but it caused another big problem
TVs didn’t have a dial for UHF, obviously because it hadn’t been invented when those TVs were made
The FCC then mandated that all new TV sets manufactured must have the ability to receive both VHF and UHF channels. Owners of existing receivers had to buy a special tuner if they wanted to see UHF stations.
Also, viewers quickly discovered that UHF stations were much harder to tune in than VHF stations, and for most people the new UHF channels required a special antenna.
Also, they took more power operate, and they were considered inferior/lesser stations than VHF stations.
UHF vs VHF
But, there were even more problems for UHF stations; they required far more transmitter power to cover a given area, and, compared to VHF, their signals tend to encounter more reception problems
This meant UHF stations were at an obvious disadvantage.
Many UHF stations in VHF/UHF markets "went dark" (ceased operations).
Because the number of viewers was limited, they simply couldn't generate enough revenue to stay on the air. A commercial UHF station in San Francisco was sold to a public station for one dollar.
Years later, many of the UHF problems were solved with new types of TV sets and the wide use of cable. (Cable television/satelitte makes all TV stations equal, regardless of frequency or power.)
Digital broadcasting also eliminates the frequency problems with UHF
Incidentally, when digital/high-definition (HDTV) television was in the planning stage in the 1990s, the FCC decided to take over a large (and mostly unused) chunk of the UHF spectrum for this new technology.
Today, there are more than 1,000 digital/high-definition stations on the air in the United States.
Compatability Problems with Other Countries
Almost all countries use a different broadcast system than the United States.
Starting later than the United States, these European countries were able to devise systems that, in terms of clarity, were superior to the U.S. system — and totally incompatible with it.
The European system is called PAL, or Phase Alternating Line
The American System was called NTSC, or National Television System Committee
After the "Big Switch," the US uses ATSC, or Advanced Television Systems Committee (Only North America, US territories overseas and South Korea use it)
This also meant that TV receivers (and later, videotape machines) sold in one country often could not be used in another country.
Incompatible television standards also created major problems for selling U.S. TV programs to European countries. (The export of film and TV entertainment programming is one of the largest exports for the United States.)
Coast to Coast Changes
When AT&T finished linking the east and west coasts, TV changed.
From then on, programming that was produced on either the east or west coasts (where most TV programming originates) could be sent "live" over network lines to stations throughout the country.
In 1956, a video recording system was invented, which made all this even easier.
Video tape was cheaper than film…didn’t need to be developed like film…and the quality wasn’t a lot worse
Focal Point of the Family
By 1955, the cost of TV sets had come down considerably. Instead of being equal to half the price of a car, they were now just equal to the cost of a new set of tires.
In that year, 67 percent of homes had a black and white TV receiver (color had not hit the scene yet).
Just five years after that the figure had reached 87 percent.
Television had now taken the place of radio as the family's evening focal point.