Gyrator theory and a Working Circuit

Lots of discussions about gyrators (synthetic inductors and filters) reference a very few of the same pages. Here are two linked articles. https://www.scribd.com/document/51284494/Gyrator-Theory
But finding an actual circuit with actual values and comments on selecting them is harder to find.

I provide this LTspice model circuit showing a circuit and a way to select reasonable values for an example.

put schematic in github...


added: thorough discussion 

Elliott Sound Products

https://sound-au.com/articles/gyrator-filters.htm

simulated inductors

https://sound-au.com/articles/active-filters.htm#s12