Where Did Those Cell Phones Come From?
Computers & Technology → Technology
- Author D Ruplinger
- Published November 22, 2005
- Word count 647
In 1949 the first car phone service was introduced. It was
called “Mobile Telephone Service” (MTS). But the beginning of
wireless communication started many years earlier, in 1895,
when an Italian physicist named Guglielmo Marconi successfully
sent wireless signals a distance of one and one half miles.
In 1896 Marconi was granted the world’s first patent for a
wireless telegraphy system. In 1897 he formed The Wireless
Telegraph and Signal Company. During that same year he
successfully sent wireless signals a distance of twelve miles.
In 1901 Marconi proved the curve of the earth did not affect
the successful sending of wireless waves. He proved it by
transmitting signals from Cornwall, England to St. John’s,
Newfoundland, which was a distance of over two thousand miles.
Marconi, along with other scientists and researchers, continued
to work and do research on wireless transmissions. In 1932 the
world’s first microwave radiotelephone link was established
between the Pope’s summer home in the small Italian town of
Caster Gandolfo and Vatican City, a distance of approximately
thirty miles.
The first ship-to-shore radio conversation took place in 1922
from the ship S.S. America, which was 400 miles at sea.
Inter-continent telephone communications between the United
States and England occurred in the mid 1930’s.
As technology improved, interest in a car phone service
developed. The first car phone service that was introduced in
1949 was a mobile service, but the equipment was big and heavy.
The phone required a large receiver (about the size of a large
piece of luggage). It was placed in the trunk of the vehicle.
To talk on the phone, a button had to be pushed. To listen to
the other person, the button had to be released. It was similar
to using a two-way radio. A person couldn’t talk and listen at
the same time. That technology came later.
Phone calls from the first mobile phone service were not
direct-dialed. Instead, an operator working for the mobile
phone service company answered when the phone was picked up.
The operator connected the caller to the phone company
operator, who then placed the call. By the early 1960’s the
technology had improved, but only slightly. One step in the
connection process was eliminated. The phone was able to
connect directly to the phone company, saving the caller the
step of having to connect to the mobile phone service operator
first. The improved service was called “Improved Mobile
Telephone Service” or IMTS.
By the early part of the 1980’s the phones had full-duplex
capability. This meant a person could listen and talk at the
same time. The phones and receivers were still heavy though.
And, because the IMTS phones were a type of scanner, it wasn’t
unusual for a person to press a channel button on the phone and
hear parts of someone else’s conversation.
Technology continued to improve and continues to improve today.
Cell phones are very popular. Today they are a truly mobile
device and are easy to transport. Some of the cell phones
available today only weigh a few ounces. Some of the small cell
phones can be tricky to use though because the buttons on them
are very small.
Cellular technology continues to improve. In the United States,
carriers have been moving from analog technology to digital
technology. One big reason the move to digital technology has
been made in recent years is because it allows networks to
carry more callers at one time. Calls are also more secure on
digital networks, but are still far from being totally secure.
Today, people experience fewer dropped calls, and with the
expansion of networks, there are getting to be fewer areas
where there is no reception at all. And although many younger
people are choosing to have cell phone over a land line phone,
there are still many people who are not yet willing to give up
their land line phones.
D Ruplinger is a featured writer for
http://www.cellphoneshome.com. For more information about cell
phones, cell phone plans, and cell phone service providers,
visit http://www.cellphoneshome.com.
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