Discover a mini DIY Tesla transformer built from an old TV, featuring a fully transparent epoxy case that reveals all internal components. Watch high-voltage sparks, learn how it works, and explore ...

create SEO description Explore jaw-dropping high-voltage experiments with a Tesla transformer as we test an old Nokia phone, ...

So you have an old tube-type transmitter as a backup. It ran perfectly when you last turned it on two years ago to substitute for your then-ailing solid-state main transmitter. Now you need it again.