A. F. BEAM PENTODE
Base: OCTAL
Uf = 6,3 V
If = ca 0,9 A

Typical characteristic:
Class A1
Singl tube Push-Pull
Ua = 250 V 270 V
Ug2 = 250 V 270 V
Ug1 = -14 V -17,5 V
Ia = 72 mA 134 mA
Ig2 = 5 mA 11 mA
Ra = 22,5 kΩ -
Ra-a = - 5 kΩ
N = 6,5 W 17,5 W

Limiting values:
Triode
Ua = 450 V
Ug2 = 450 V
Wa = 30 W
Pentode
Ua = 500 V
Ug2 = 450 V
Wa = 30 W

Grid No 1 Circuit Resistence
Fixed Bias 0,1 MΩ 0,1 MΩ
Self Bias 0,5 MΩ 0,5 MΩ
Capacitances:
cg1 = 12,5 pF
ca = 10 pF
ca/g1 = 1,5 pF