In Reply to: RE: clarity posted by Paul Joppa on June 7, 2012 at 10:07:26:
In any case, EML is talking about using it for grids, not for filaments. All their tubes use oxide-coated filaments, as do any 45s. Tungsten for Grids is probably not all that rare, I'd speculate. Rare grids were the gold-plated ones used by Western Electric, and later by a few modern tube manufacturers. (reduces secondary emission from the grid)
-Ed
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Follow Ups
- RE: clarity - Ed Sawyer 12:58:26 06/07/12 (0)