The SPUTNIK OSCILLATOR is a voltage controlled oscillator (VCO) with a dynamic linear frequency modulation (FM) input and a unique variable waveform section. Wave shape outputs include sine, triangle, sub-octave pulse (2 octaves below the primary frequency), and variable waveshape. The waveshape out is a crossfader between a sine wave and either square or ramp wave via control voltage (0V to +5V) or a front panel knob.