Gregory experiments with a Reference Source and Clock distributor that uses the Si5351 clock generator IC.
The unit comprises an Ovenized Crystal Oscillator OCXO as the frequency reference, an 8 output clock distributor IC, and a modern microcontroller.
Each output is configurable independently, with a frequency range from 10kHz to 200MHz.
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https://www.youtube.com/watch?v=jr0usnCgeFs