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tetrode 813 - (NOS)
Vintage and very rare soviet beam-power tetrode 813 with maximum anode dissipation of 100W. It is direct replacement for the american 813 tubes and also for the chinese FU-13. The 813 soviet tubes later production was renamed to GU-13 (ГУ-13). New old stock tubes, directly from the old reserves, tested (please look at the gallery pictures). Year of production: 1950.
(we reserve the right to change the description and specifications without prior notice)