The first civilian transistor radio, called Regency TR-1, by the Association of Indianapolis City Industrial Development engineer Regency Indiana Department of Development, in November 1954 into the market. The price was $ 49.95 (equivalent to $ 361 in 2005), it has sold about 150,000. On the US market, the transistor radio until the early 1960s did drop below $ 20; later, "Made in Hong Kong" the influx of the United States to further reduce the price to $ 10 or less.
Amplifying transistor radio unit using a transistor instead of a tube, and thus more compact than tube radio, and more power. 1950 typical portable (tube) radio the size of a lunch box, built a number of large batteries: one or more A-type cell is responsible for heating the tube filaments, the remaining 45-90 volt "B" batteries to other circuitry. And a transistor radio can fit into a pocket, the weight but 250 g, 9V battery or a battery-powered single flashlight. (Now common ground 9V battery especially for power transistor radios)
Transistor radio is the existing number of communication devices simple. According to estimates, at least the existing 7,000,000,000 station in the world, almost all of them can listen to ordinary wave programs, and listen to FM programming models percentage is also growing rapidly. Some also listen to shortwave broadcasts. Most battery power. Because they use advanced electronic technology to millions of originals onto a single integrated circuit or chip becomes very small and cheap. Affix "transistor" It basically refers to the old small radio, also refers to a number of small radio, but the concept itself is no longer used today, because in essence, whether the radio is not pocket are based transistor.