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There was an older tube amp that was class B. ....maybe a Collins?? Our tube type AM broadcast transmitters had a class C plate modulated RF amp and the audio amp modulator was class B. Distortion at full peak modulation was less than 1%.

[QUOTE="Captain Kilowatt, post: 597265, member: 39"] There was an older tube amp that was class B. ....maybe a Collins?? Our tube type AM broadcast transmitters had a class C plate modulated RF amp and the audio amp modulator was class B. Distortion at full peak modulation was less than 1%. [/QUOTE]

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