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Old 16th August 2011, 03:42 AM   #1
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Default Tube innards

Can anyone tell me what metals are used for cathodes, plates and heaters?
in modern tubes.
are they coated with something

Thanks

Paul
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Old 16th August 2011, 03:51 AM   #2
Gilgy is offline Gilgy  United Kingdom
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Lookee here ...

building vacuum tubes... some questons
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