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This is an accepted version of this page This is the latest accepted revision, reviewed on 23 January 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 ...
Teasmades generally include an analogue alarm clock and are designed to be used at the bedside, to ensure tea is ready first thing in the morning. [1] Although crude versions existed in Victorian times, they only became practical with the availability of electric versions in the 1930s. They reached their peak in popularity in the 1960s and 1970s.
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.
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A voice-activated radio-dispatched alarm, or VARDA-alarm, is a type of burglar alarm that, when activated or "tripped", broadcasts the type of the alarm and the transmitter location over the local police radio frequency using a pre-recorded audio message. [1] In 1968, the voice-activated radio dispatched alarm (VARDA), was invented.
In the United Kingdom, 44.3% of the population now has a DAB digital radio set and 34.4% of listening is to different digital platforms. Because of the early success of the old DAB standard, the transition to the more efficient DAB+ takes more time. If DAB was switched off, older receivers would become worthless.
DAB MUX 1 Digital Radio Cibicom is the gatekeeper of this multiplex broadcasting commercial national radio. DAB MUX 2 National public service stations. DR's 7 channels (including the 10 regional variations of DR P4), as well as the privately owned, public service channel Radio4. DAB MUX 3 Regional and local commercial radio.
In Korea, the transmission of MBC 11FM was stopped in 2015 and the DAB channel was switched to T-DMB V-Radio. DAB in Ireland was confined from 2017 to state broadcaster RTÉ Radio's multiplex, which was switched off in March 2021, after a survey showed 77% of adults listen to radio via FM, compared with 8% via digital means, of which 0.5% via ...