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BEFORE BUYING READ ALL THE DESCRIPTION.
2 X CV1988 / 6SN7GT / B65 TUBE. USED.
BRAND: PHILIPS KLU / MARCONI WIRELESS TELEGRAPH. 1950s PRODUCTION.
BLACK PLATES, HALO / RECTANGULAR GETTER.
BOTH TUBES ARE USED; THEIR EMISSION IS LOW. THIS TUBES WILL NOT FUNCTION IN STANDARD MUSIC HI-FI EQUIPMENT DUE TO
THEIR LOW VOLTAGE EMISSION. BUY ONLY KNOWING BOTH TUBES WILL NEED SPECIFIC MODIFICATIONS ON THE EQUIPMENT TO
FUNCTION PROPERLY.
TESTED IN ROEHRENTEST TUBE TESTER:
51/78% 4.602/7.054mA EMISSION (EM)
55/51% 4.909/4.609mA EMISSION (EM)
CH169U1