The modulated signal source provides a 10mW CW output and a 5mW modulated output at a modulation frequency of 1000Hz. The spur and harmonic output is 40dB lower than the desired output. The frequency multiplication phase is followed by a 72MHz crystal oscillator. The attenuation is between the generator and the load. The multiplier is a regulated power supply or battery while the oscillator is running continuously. This circuit uses a regulated power supply or battery.