Im working on a project and would like to know if there is a way to run a stand alone fpv system without a drone. What is required to make the fpv system work essentially. What system is on the bottom end of price scale for puchace (preferably used) so i can run my proof of concept. Amazon is flooded with options and i dont think FT sellls used. What would you recommend? If i can prove my concept i will build a prototype to run the new dji fpv. But need to get the concept together then start upgrading. Thanks!