Description
Class H03C : MODULATION
Subclass 1/26: Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of discharge device having at least three electrodes (H03C 1/28-H03C 1/34, H03C 1/5, H03C 1/52, H03C 1/62 take precedence) carrier applied to control grid modulating signal applied to cathode