TESTED. 6F4P ( ECL84, 6DX8, 6DQ8 ) HF Triode - Pentode tubes. SAME DATE 1985 PCS 1
TEST: TRIODE: Ua=200, Rk=600 OHm
№2   Ia=2,8mA, S=4mA/V
№3   Ia=2,7mA, S=4mA/V
№5   Ia=3,1mA, S=4,3mA/V
№6   Ia=2,7mA, S=3,9mA/V
№8   Ia=3,1mA, S=4mA/V
№9   Ia=3,5mA, S=3,7mA/V
№10  Ia=2,9mA, S=4,1mA/V
№11  Ia=3,1mA, S=3,8mA/V
№12  Ia=2,6mA, S=3,4mA/V
№14  Ia=3mA,   S=4,4mA/V
TEST: PENTODE:  Ua=170V, Ug2=170V, Rk=100 OHm
№2   Ia=18mA,   Ig2=3,6mA, S=10,4mA/V
№3   Ia=16,4mA, Ig2=3mA,   S=10,8mA/V
№5   Ia=19,6mA, Ig2=3,4mA, S=11,4mA/V
№6   Ia=15,6mA, Ig2=2,4mA, S=10,8mA/V
№8   Ia=15,2mA, Ig2=2,6mA, S=10,8mA/V
№9   Ia=16mA,   Ig2=2,6mA, S=10,6mA/V
№10  Ia=18,8mA, Ig2=3,3mA, S=10,2mA/V
№11  Ia=16,4mA, Ig2=2,9mA, S=11,6mA/V
№12  Ia=15,2mA, Ig2=3mA,   S=10,4mA/V
№14  Ia=16,8mA, Ig2=3mA,   S=11,6mA/V


Heat voltage...... 6,3 ± 0,6V
Filament current...... 720 ± 60 mA

Triode part:
Anode voltage rated (constant)...... 200 V
Anode voltage limiting (constant)...... 250 V
Anode current...... 3 ± 0,9 mA
Cathode current limiting...... 12 mA
The power disseminated by the anode,limiting...... 1 W
Steepness of the characteristic...... 4 ± 1 mA / V
amplification coefficient...... 65

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