>As far I know, the US companies who rebuilt metalo-ceramic
>tubes, are doing this with only high-power models.
As I understand it: only thoriated tungsten type power grid tubes are
rebuildable. . . The smallest tube that is currently being rebuilt is
the 3cx1000A7.
>I would like to know if there are technological problems
>with relative low power tubes ( like 3CX800, 3CX1500...)
Oxide cathode power grid tubes are typically not feasable to rebuild.
>or the reason is the re-built price versus new price ratio ?
The rebuilt price is around half of the new price. However, it is much
cheaper to buy a new Svetlana tube in Europe than it is to have a tired
tube rebuilt in the U.S. by Econco Broadcast Services.
Rich---
R. L. Measures, 805-386-3734, AG6K
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