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2 X 6211 TUBE. NEW OLD STOCK.
BRAND: TELEFUNKEN. 1960s PRODUCTION.
GREY PLATES, HALO GETTER, GOLD PIN, MATCHED PAIR.
6211 IS A COMPUTER GRADE TUBE ESTRUCTURALY AND ELECTRICALLY IDENTICAL TO ECC802S. HAS DIFFERENT AMPLIFICATION FACTORS: 6211: 27 TO 31; ECC82 / 12AU7: 18 TO 19.
TESTED IN COMPUTERIZED ROEHRENTEST TUBE TESTER:
92/109% 4.235/5.015mA EMISSION (EM) 3.19/3.78mA/V TRANSCONDUCTANCE (GM)
97/110% 4.46/5.067mA EMISSION (EM) 3.2/3.77mA/V TRANSCONDUCTANCE (GM)
CH164U1