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4 X EL84 TUBE. USED.
BRAND: PHILIPS-MINIWATT. 1950s PRODUCTION.
GREY PLATES, HALO GETTER, COPPER RODS.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
80% EMISSION (EM) 92% TRANSCONDUCTANCE (GM) 2.2mA/V GAS
80% EMISSION (EM) 89% TRANSCONDUCTANCE (GM) 2.8mA/V GAS
87% EMISSION (EM) 94% TRANSCONDUCTANCE (GM) 2.2mA/V GAS
95% EMISSION (EM) 97% TRANSCONDUCTANCE (GM) 3.8mA/V GAS
CH164U1
