circuits

Dalibor Farny documents the hand manufacture of a nixie tube, from glassblowing to evacuation, with text notes rather than narration. He revived the lost craft of nixie tube making.

Strange Parts tours JLCPCB's large PCB factory in Huizhou, China, walking through the printed circuit board manufacturing process step by step. It shows the machinery, quality checks and scale behind cheap prototype boards.

A tour of the historic WLW transmitter facility in Mason, Ohio, recorded at Hamvention 2013. It shows the surviving equipment from the 500,000 watt AM era, when WLW was the only US station at that power, and explains the history.

Remastered episode of Tim Hunkin's The Secret Life of Machines about the radio, covering its development including Hertz and Marconi experiments and Armstrong's FM radio in animated form.