300B-98B is a mesh screen
a, using a pure nickel anode carbon
b, plate consumption 45W
c, coated with gold to improve the gate
d, strong emission cathode material
e, the spring constant filament
f, is an improved version of 300B
g, Features: a slight increase in power output
h, long-life tube
i, a wider frequency response
j, known as the ”Dream of the ball.”

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