Vic -- The type of power-grid tubes that are normally rebuilt are
those with thoriated tungsten filaments and ceramic-metal construction.
However, rumour has it that someone is rebuilding 8877s. -- cheerz
On Jun 4, 2004, at 7:39 AM, Vic Rosenthal wrote:
R.Measures wrote:
? Econco reportedly tried rebuilding 4-1000As but it proved to
economically unfeasible. The advantage of ceramic-metal tubes is
that they are literally silver-soldered together, so they may - if
required - be disassembled, repaired, and re-soldered. However, most
worn out ceramic-metal tubes only need to be re-carburized with
acetylene gas and re-pumped to restore full function for c. another
20k hours of operation.
Can the 3CX800A7 be rebuilt? I am happy with my Alpha 86, but the
thought of eventually needing to replace the tubes at current prices
is scary.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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