How to rewrite RadioSniffer code?

Question

Arduino

Hello! I assembled such a device (almost like the author’s, only without a display and a tweeter ) https://mexatrondiy.ru/radio-sniffer-433-315/ arduins, it starts scanning the air, if there is any signal, it puts it into memory and flashes a light on the board (built-in), then a button is connected to the pin, and when I press it, it will start broadcasting the signal on the air. Is there such a project? I will be grateful for the answer