On Sunday 25 January 2004 12:51, R.Measures wrote:
> ** Probably the most rugged valves/tubes around are those with
> thoriated-tungsten mesh filaments. Examples are the 8170R/4cx5000R,
> 3cx1000A7, 4cx1500A, the 4cx10,000J, et cetera. However, shipping such
> valves in a separate padded box is still a good idea since a valve that's
> dislodged from its socket can break a vacuum capacitor.
If we're considering the mechanical viewpoint, I'd find it difficult to
imagine anything much more rugged than a GS35B internally.
Steve
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