BBC Radio 4 is a British national radio station owned and operated by the BBC. The station replaced the BBC Home Service on 30 September 1967 and broadcasts a wide variety of spoken-word programmes from the BBC's headquarters at Broadcasting House, London. Since 2019, the station controller has been Mohit Bakaya. She replaced Gwyneth Williams, who had been the station controller since 2010.
A transistor radio is a small portable radio receiver that uses transistor-based circuitry. Following the invention of the transistor in 1947—which revolutionized the field of consumer electronics by introducing small but powerful, convenient hand-held devices—the Regency TR-1 was released in 1954 becoming the first commercial transistor radio. The mass-market success of the smaller and cheaper Sony TR-63, released in 1957, led to the transistor radio becoming the most popular electronic communication device of the 1960s and 1970s. Transistor radios are still commonly used as car radios. Billions of transistor radios are estimated to have been sold worldwide between the 1950s and 2012.
In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna. The antenna intercepts radio waves and converts them to tiny alternating currents which are applied to the receiver, and the receiver extracts the desired information. The receiver uses electronic filters to separate the desired radio frequency signal from all the other signals picked up by the antenna, an electronic amplifier to increase the power of the signal for further processing, and finally recovers the desired information through demodulation.
RTÉ Radio 1 is an Irish national radio station owned and operated by RTÉ and is the direct descendant of Dublin radio station 2RN, which began broadcasting on a regular basis on 1 January 1926.
The CK722 was the first low-cost junction transistor available to the general public. It was a PNP germanium small-signal unit. Developed by Norman Krim, it was introduced by Raytheon in early 1953 for $7.60 each; the price was reduced to $3.50 in late 1954 and to $0.99 in 1956. Norm Krim selected Radio Shack to sell the CK721 and CK722 through their catalog. Krim had a long-standing personal and business relationship with Radio Shack. The CK722s were selected "fall out" from the Raytheon's premium-priced CK721. Raytheon actively encouraged hobbyists with design contests and advertisements.
Kenwood is a Japanese brand of consumer electronics. It has been owned by JVCKenwood since October 2011, when Kenwood Corporation merged with JVC. Kenwood manufactures audio equipment such as AM/FM stereo receivers, cassette tape decks/recorders, amateur radio (ham) equipment, radios, cellular phones, speakers, and other consumer electronics.
Kalundborg Radio was a major transmission facility for long- and mediumwave at the harbour of Kalundborg in Denmark. Longwave broadcasts on 243 kHz began on 27 August 1927 and ceased on 31 December 2023. Mediumwave broadcasts on 1062 kHz began on 1 October 1951 and ceased in June 2011.
Grundig is a consumer electronics manufacturer owned by Arçelik A.Ş., the white goods manufacturer of Turkish conglomerate Koç Holding. The company makes domestic appliances and personal-care products.
GlenDimplex is an Irish based consumer electrical goods firm headquartered in Dublin, Ireland. The company is privately held, with manufacturing and development centres in the Republic of Ireland, the United Kingdom, China and many other locations around the world.
The Trans-Oceanic was a brand of portable radios produced from 1941 to 1981 by Zenith Radio. They were characterized by heavy-duty, high-quality construction and their performance as shortwave receivers.
Bush is a British consumer electronics brand owned by J Sainsbury plc (Sainsbury's), the parent company of the retailer Argos. The former Bush company is one of the most famous manufacturers of early British radios. The company is now defunct, but the Bush brand name survives as a private label brand for budget electronics. Today, all Bush are sold exclusively at Argos and Sainsbury's, with Argos having a wider selection.
Brionvega is an Italian electronics company that is known for manufacturing futuristic television sets and audio equipment, its contributions to post-second world war technological and social advancement in Italian industry, collaborations with well known industrial designers and architects, and its impact on the aesthetics of 1960s Italian design.
Morphy Richards is a British brand of electrical appliances headquartered in Swinton, in South Yorkshire, England. Its products were formerly made at its historic home of Mexborough, and in other facilities across the United Kingdom. However, since the 1990s, all of its manufacturing is now carried out in the Far East.
Sangean Electronics, Inc. is a Taiwanese electronics company headquartered in Zhonghe District, New Taipei, Taiwan, with a factory located in Dongguan, China. The organisation is globally active with business units in Venlo, Netherlands, for Europe and Santa Fe Springs, California, for the Americas. The business units are directly in contact with distributors in relevant areas. It is noted for its shortwave radio receivers and digital radio receivers.
Ferguson Electronics is an electronics company specializing in small electronics items such as radios and set top boxes.
EKCO was a British electronics company producing radio and television sets from 1924 until 1960. Expanding into plastic production for its own use, Ekco Plastics produced both radio cases and later domestic plastic products; the plastics company became Lin Pac Mouldings Ltd.
Hacker Radio Limited manufactured domestic radio and audio equipment. The company was formed in Maidenhead by brothers Ron and Arthur Hacker in 1959, and traded successfully until 1977. Financial difficulties resulted in the company being sold and relaunched with the name Hacker Sound which closed in 1979.
Norman B. Krim (1913–2011) was an American electronics engineer and engineering executive. His drive to create a transistor product for the electronics experimenter-hobbyist market contributed to paving the path for a generation of American electronics engineers and technicians during the Space Race between the United States and the Soviet Union.
Perdio Radio was a British electronics company founded by Derek Willmott and Joyce Willmott in 1955. Former RAF pilot Derek Willmott was a DECCA researcher developing RADAR applications and was already an inventor, with designs for multiple miniaturisation applications in consumer electronics, including designs for portable personal tape players and small radios and televisions. The newly available transistors allowed the Willmotts to enter the market with Perdio, producing the PR1 in 1957. A 5 Transistor design meant a highly compact and efficient unit which led on to production of 56 models bearing the Perdio name. Perdio also produced the Portarama Television set currently on display in Londons Science Museum along with a 'Spinny' radio.
