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The earliest radios were based on vacuum tubes. In the 1950's, vacuum tubes gradually became replaced by transistors, to produce what were known as solid state radios (solid because they did not contain any vacuum). Since then, there have been many other refinements. At one time, you could only tune to a specific frequency by turning a knob until you manually located it; now we have systems that can find frequencies automatically, and can return to them automatically at the press of a button. Every aspect of a radio has been refined by decades of research and development. We also now have satellite radio, in addition to regular kinds of broadcast, which is another major development.
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What does AFC mean on old radio?
Auomatic Frequency Control. Newer radios have it too. It's just not advertised and there is no longer a switch to turn it off like on the old radios.
Old radio component valve?
Valve is another term for vacuum tube, used in old radios.
What is the difference between old and new modern system technology in radio communication and safety?
THATS SIMPLE OLD WERE not so good to commmunecate as new modern things are better
What is the differences between native music and folk music?
ahmmm it is the music that love you forever and ever. Even you are old
Was Mercury used in old radios?
Mercury would only appear an an old tube radio which uses a mercury-vapor rectifier.These are pretty rare, and glow either green or blue, as opposed to a normal tube's orange/red color.
What are the differences and similarities between modern and ancient women?
One is old the other is not as old. :)
What are the differences between old Israel and modern Israel?
Israel became a lot more modern and city like.
List ten differences between old storage media and modern storage media?
fastersafereasier to usecheapernoise level is lowerMore spaceSmaller
What Difference between the old and the modern English?
what differnce between the old and the modern english
The differences between life in the Old Stone Age and today?
the differences between life in the Old Stone Age and life today
What are some differences and similarities between medieval and modern day clothing of women?
because they did not have holister or superdry in the old days now in 2013 we have all these cool shops
What has become of the old radios?
They have become popular old
What are the differences between old and new irrigation methods?
t are the difference between old and new irrigation method
What is the difference between old and new Hindi movies?
There are no differences
What are the differences between new and old cash registers?
age
What are the differences between the old and new globe theatre?
the prices....
What are the differences between new zoos and old zoos?
Most modern zoos are concerned with the welfare of the animals they keep, rather than caging or otherwise confining creatures regardless of their needs.
