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2 X CCa TUBE. NEW OLD STOCK.
BRAND: SIEMENS. 1960s PRODUCTION.
GREY PLATES, HALO GETTER, GOLD PIN, MATCHED PAIR.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
126/114% EMISSION (EM) 110/103% TRANSCONDUCTANCE (GM) 0.6/0.8mA/V GAS
133/114% EMISSION (EM) 117/113% TRANSCONDUCTANCE (GM) 0.8/1.2mA/V GAS
CH164U1