Radio frequency transmitter having circuitry for regulating a mixing frequency adjusting output power, eliminating high frequency abnormalities, preventing audio/visual interference, and controlling output intensity

摘要

A radio frequency transmitter includes a video signal input terminal, an audio signal input terminal, a variable frequency modulation degree circuit, a band pass filter, a sound intensity regulation circuit, a voltage controlled oscillator, a modulation mixer, and an amplifying circuit. The transmitter is arranged to eliminate high frequency abnormalities, prevent interference of audio signals with video signals, stabilize the audio frequency response of the transmitter, and improve circuit stability.