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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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ianderson
92 posts
 
Succinct history lesson on the audio vacuum tube with some good advise thrown in for good measure Steve, well done.
geoffkait's avatar
geoffkait
23,365 posts
 
I’ll take all the tubes from the early 40s and early 50s. You guys can fight over the rest of them.
audition__audio
1,493 posts
 
I have never thought the extra $ brought by JAN (military) tubes was justified. A tubes ability to withstand shock and vibration has nothing to do with how this tube will sound. Further many military tubes are the same internally as their civilian counterparts just (supposedly) tested to the shock and vibration standard by the mfgr. for military use. 
chakster's avatar
chakster
6,144 posts
 
Many industrial tubes are just bad, some are very good.
Military Telefunken tubes are oustanding. 
Russian military tubes are better than industrial.  
lewm
13,071 posts
 
Dang! I guess I will have to ditch my Hitchcock tube tester and look for a Hickok.
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