Below shows some output waveforms taken from a finished kit. The images were taken on a Tektronics 100MHz digital oscilloscope.

These show the lowest and highest achievable output frequencies using the kit components, as well as some intermediate frequencies.

Sine Wave, Lowest Output Frequency

Sine Wave, Highest Output Frequency

Triangle Wave, Lowest Output Frequency

Triangle Wave, Highest Output Frequency

Square Wave, Lowest Output Frequency

Square Wave, Highest Output Frequency