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4 X E81CC TUBE. USED.
BRAND: MINIWATT. 1960s VALVO PRODUCTION.
GREY PLATES, SOLID GETTER, 3 MICA, GOLD PIN.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
64/60% EMISSION (EM) 78/76% TRANSCONDUCTANCE (GM) 1.0/0.6mA/V GAS
60/72% EMISSION (EM) 76/89% TRANSCONDUCTANCE (GM) 1.2/0.8mA/V GAS
70/114% EMISSION (EM) 80/115% TRANSCONDUCTANCE (GM) 1.0/0.6mA/V GAS
76/86% EMISSION (EM) 88/98% TRANSCONDUCTANCE (GM) 1.2/1.0mA/V GAS
CH164U1
