Description
5 X ECL80 TUBE. NEW OLD STOCK IN ORIGINAL BOX. BRAND: TELEFUNKEN. 1950s SIEMENS AND HALSKE PRODUCTION. GREY PLATES, HALO GETTER, 3 MICA, MATCHED QUINTET. TESTED IN FUNKE W19S TUBE TESTER: TRIODE MINIMUM GOOD EMISSION = 60% = 4.2mA PENTODE MINIMUM GOOD EMISSION = 60% = 14mA 7.5/23mA EMISSION (EM) 7/23mA EMISSION (EM) 7.4/25mA EMISSION (EM) 7.6mA EMISSION (EM) 7mA EMISSION (EM) CB406U1