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1 X ECF80 TUBE. NEW OLD STOCK.
BRAND: MARCONI. 1960s PRODUCTION.
GREY PLATES, HALO GETTER.
TESTED IN FUNKE W20 TUBE TESTER:
TRIODE MINIMUM GOOD EMISSION = 60% = 8.6mA
PENTODE MINIMUM GOOD EMISSION = 60% = 6mA
13.6/9.4mA EMISSION (EM) (94.8/94% EMISSION)
CH165U1