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A Soundesign pocket transistor radio from the 1960s. SDI Technologies was founded as Realtone Electronics in 1956 by Saul Ashkenazi and Ely Ashkenazi. [3] In that year, the company introduced a pocket cigarette lighter and a transistor radio, but neither one of the first. [4] [5] Realtone went public in 1961. [2]
Talking alarm clock: Only a few IC's are needed to build a clock that really tells time. Lee Glinski: 54/5: May 1983 Car burglar alarm: An inexpensive form of insurance that can avert an automobile break-in. Edward W. Loxterkamp: 54/5: May 1983 VLF-HF passive antenna tuner: Another approach to optimizing reception at very-low frequencies. R. W ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 25 February 2025. Type of clock A traditional wind-up (key-wound), mechanical spring-powered alarm clock An alarm clock or alarm is a clock that is designed to alert an individual or group of people at a specified time. The primary function of these clocks is to awaken people from their night's sleep or ...
A modern LF radio-controlled clock. A radio clock or radio-controlled clock (RCC), and often colloquially (and incorrectly [1]) referred to as an "atomic clock", is a type of quartz clock or watch that is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock.
Radio ZS South Africa: English Monthly Unknown old man Switzerland: German, Italian, French Monthly 1932–2007 HBradio Switzerland: German, Italian, French Monthly 2008–present Practical Wireless United Kingdom: English Monthly 1932–present RadCom United Kingdom: English Monthly 1913–present CQ Amateur Radio United States: English Monthly
John Francis Rider (1900–1985) was an American radio engineer best known as publisher and author of over 125 books for radio and television servicing. He founded John F. Rider Publisher Inc. and was responsible for annual volumes of the Perpetual Troubleshooter's Manual from 1931 to 1954.
The following is a list of FCC-licensed radio stations in the U.S. state of Alabama, which can be sorted by their call signs, frequencies, cities of license, licensees, and programming formats. List of radio stations
Unlike the Acoustic Wave, the Wave Radio could be used as an alarm clock radio, and featured two independent alarms, which could be set to A/M or F/M radio, a buzzer, or a device plugged into the auxiliary input. The "Wave Radio II" was introduced in 2005 and was based on the Wave Music System without the CD player.