We don’t know who the [amgworkshop] wanted to listen in on, but they apparently went searching for a small FM wireless transmitter. There’s plenty of circuits around, but they wanted something ...
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Engineer invents tiny listening device that could make lengthy blackouts a thing of the past: 'We think of the grid like a giant guitar'Blackouts caused by downed power lines and damaged transformers could soon be shorter and less frequent thanks to a tiny solar-powered listening device, potentially saving time, money, and lives.
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