I've seen one once at a HamFest or something. There are kits out there to make your own though: https://www.tfw8b.com/product/minstrel-4d-turbo-jupiter-ace-co

I've seen one once at a HamFest or something. There are kits out there to make your own though: https://www.tfw8b.com/product/minstrel-4d-turbo-jupiter-ace-compatible-computer-kit/ https://www.tfw8b.com/product/minstrel-4d-turbo-jupiter-ace-...