The grid of the 805 is designed so that the amplification of the tube varies with the amplitude of the input signal. This feature facilitates the design of Class B A-F amplifiers and modulators to give high output with low distortion.
Designed to be used in class A, B, C amplifiers. 211 can replace a GL-211 and UV-211. Has a 10v heater, 1250 plate voltage with 100W dissipation. Has a power output of 42.5 watts with 7.5 watts drive at 1250V plate. Manufactured in China by Shino SKU: 211