![TIL Economy 7 electricity meters in Britain are switched over by an inaudible signal from BBC Radio 4 Long Wave : r/todayilearned TIL Economy 7 electricity meters in Britain are switched over by an inaudible signal from BBC Radio 4 Long Wave : r/todayilearned](https://external-preview.redd.it/-OyJ8a4SQ4o1nEJ3wOePX-TYs41QhMYACUcUpLaucQE.jpg?width=640&crop=smart&auto=webp&s=ed091b86a8d72a9afcc63e3e05c12cce5afb9594)
TIL Economy 7 electricity meters in Britain are switched over by an inaudible signal from BBC Radio 4 Long Wave : r/todayilearned
![BBC announces end of Shipping Forecast and Test Match Special on Radio 4 long-wave | Daily Mail Online BBC announces end of Shipping Forecast and Test Match Special on Radio 4 long-wave | Daily Mail Online](https://i.dailymail.co.uk/1s/2022/05/27/11/58354969-0-image-a-115_1653646038149.jpg)
BBC announces end of Shipping Forecast and Test Match Special on Radio 4 long-wave | Daily Mail Online
BBC Radio 4 - 🎛 The big BBC calendar says that on this day in 1934 the awesome Droitwich high-powered long-wave radio transmitter was switched on, so here's a lovely picture from
![1978 BBC Radio Poster, Radio 1 2 3 and 4, British Broadcasting Corporation, New Wavelengths advertising, media wall art decor in 2022 | British broadcasting corporation, Bbc radio, Radio 1978 BBC Radio Poster, Radio 1 2 3 and 4, British Broadcasting Corporation, New Wavelengths advertising, media wall art decor in 2022 | British broadcasting corporation, Bbc radio, Radio](https://i.pinimg.com/originals/8c/b1/2d/8cb12d876f2b72734c6e072579e5f786.jpg)