Hello, I was looking around for a phone signal booster schematic but most (if not all) results I found were fake. I don't know much about wireless communication so I apologize if my question is stupid. Would it be possible to build a device that uses a high gain antenna to communicate with cell towers and a smaller low gain antenna to broadcast to phones in its immediate area? Something sort of like a wifi signal booster. Just to be clear, I am not hoping for miracles, just something that turns a weak signal (<1 bar) into one capable of supporting a basic phone call. Thanks for your time.