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4 X E88C / 8255 SINGLE TRIODE PHILIPS TUBE. NEW OLD STOCK.
BRAND: PHILIPS. 1960s PROD.
SILVER PLATES, HALO GETTER, 3 MICA, SQ: SPECIAL QUALITY, HIGH GAIN.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
156% EMISSION (EM) 142% TRANSCONDUCTANCE (GM) 0.4mA GAS
152% EMISSION (EM) 139% TRANSCONDUCTANCE (GM) 0.8mA GAS
160% EMISSION (EM) 136% TRANSCONDUCTANCE (GM) 1.0mA GAS
164% EMISSION (EM) 139% TRANSCONDUCTANCE (GM) 0.4mA GAS
