I believe I owned the exact model shown below, and I remember buying it after seeing a very similar ad in a local newspaper. By the time I got one in about 1972, the price was down to $1.99, and that was after inflation. The same basic circuit was used in many inexpensive transistor AM radios. The Regency was the first transistor product for the mainstream. Over the years, the price of transistor portables came down dramatically. The radio shown here, for example, is a 4-tube portable from the 1955 Allied Radio Catalog. While they were still bigger in size, the performance of a tube portable would be dramatically better, and the cost would be much lower. A review of the radio in Consumer Reports recommended against purchase.įor 1955 listeners who needed a portable radio, a tube set was still the best option. Also, it lacked sensitivity, making it suitable only for receiving strong local stations. In particular, the single audio amplifier transistor provided meager volume to the small speaker. The original TI prototype had included 6 transistors, which was reduced to keep costs down. The radio was a generally poor performer. Still, the radio sold about 100,000 units in its first year on the market. Today, that would represent about a thousand dollars. To put that price in perspective, coinage of the day was still silver, meaning that the radio could be yours in exchange for 50 silver dollars. The radio originally retailed for $49.95. Licensed under CC BY-SA 3.0 via Wikimedia Commons. “ Regency TR-1 opened front Deutsches Museum” by Theoprakt – Own work. It was put on the market in November 1954. The major names in radio weren’t interested, but an Indiana company named Industrial Development Engineering Associates (I.D.E.A.) jumped at the opportunity. Texas Instruments produced a prototype transistor radio in 1954, and began shopping around for a radio manufacturer interested in producing it. While somewhat expensive to operate, this was an improvement over tube portable radios, which would typically operate for a few hours on a change of batteries. (The battery, incidentally, is still available, but it’s now a very specialized item and very expensive.) The radio drew about 4 milliamps, meaning that a battery would last about 20-30 hours. To function at RF frequencies, the transistors required a fairly high voltage, which was supplied by a 22.5 volt battery. It was a superheterodyne, with one transistor as the mixer-oscillator, two for IF amplification, and one as an audio amplifier. It was first produced in 1954, and featured here in Popular Mechanics, January 1955.Īs shown in the schematic diagram below, the radio used four NPN transistors from Texas Instruments. Shown here is the first commercially manufactured transistor radio, the Regency TR-1. Order your desired earphone from Star Tech online shop and get the delivery at any location you want in Bangladesh.Sixty years ago, a new phrase entered the American lexicon: transistor radio. We offer the best deals all over the country including all the major cities such as Rangpur, Chattagram, Dhaka, Sylhet, Khulna & Rajshahi. A music lover can choose from this wide variety and purchase at best price in the market. Best Earphone Brands with the VarietyĪmong the Brands Star Tech has Razer, Rapoo, HP, 1More, mi & Edifier with the types of wireless earphones, earphones with mic, in ear headphones, wireless earbuds to satisfy customer needs. It is usually used by audio engineers and musicians as well as audiophiles but it has some risk of using on the busy road. On the other hand, in-ear headphones are also small with portability to earbuds that are inserted in the ear canal providing quality sound with less environmental noise. For this reason, the user may need to increase the volume and that might cause hearing loss. UGREEN EP103 Wired In-Ear Lightning Earphone #30631Įarphones are very small portable and convenient headphones that are fitted directly in the outer ear but it has few drawbacks such as it provides less acoustic isolation with more noise to seep in. Ugreen HiTune T3 Active Noise Cancelling Wireless Earbuds Ear Phone Price list in Bangladesh 2023 Ear Phone List In 1964 Sony EFM-117J transistor radio introduced the most commonly used 3.5 mm connector and its popularity touched on the Walkman portable tape player in 1979. Since the early days of the transistor, radio earphones have commonly been bundled with personal music devices. The transistor radio the most popular audio device in history changed listening habits allowing people to listen to radio anywhere. In the beginning smaller earbud developed for hearing aids had widely used with transistor radios that eventually commercialize in 1954 as Regency TR-1. Buy Earphone at the Best Price in Bangladesh
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