Vacuum tubes: Radio tubes, TV tubes, Audio tubes


Are tubes used in radio or TV different from audio tubes used in power amps and preamps?
If they are different (i.e., if tubes used in radios and TVs are different from tubes used in amp/preamps) what are the use of radio and TV tubes?
I don't see any people caring about tube radios and tube TVs as they care about tube amps, but I see a bunch of ads in eBay for selling radio/TV tubes, and just wonder.

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Showing 1 response by wolf_garcia

I've read that tubes won't be destroyed in a nuclear bomb electromagnetic pulse so there's some comfort in that (and supposedly why they were used in jets), and there's nothing like watching original Twilight Zone episodes on a small screen black and white TV...it's warmer...more even harmonics...