Googled "Rife forum"
I did not think people were trying to "perfectly reproduce" an invisible, ephemeral butterfly of a legendary machine Rife used, I thought they wanted better and more refined equipment and results?
My dad was a telephone pioneer. He built whatever electric gizmo he wanted and i did not buy our "industrial" colloidal silver generator.
He might have built Royal's machine....and then started musing about a cathode here and a crude electron smoother-outer there and how the machine could be improved. We had a small unit and when my boss sent the BCX Ultra with the plasma tubes, I thought to throw the poor ugly little buzz box in the road. Museums reproduce, tek will not hold still long enough or repent. It adds another feature.
1955: "Here's a secret machine in 3 boxes. Take this stack of papers and you can manually enter each frequency you want!"
2020: "Push power on. Push the program button until the series you wish appears on the display. Press ok"