Some of the most ambitious RF engineering projects include the global Wi-Fi project from SpaceX, which will require over 4000 satellites in orbit to beam wireless internet down to people all over the world, using frequencies of 10-30ghz, in the Ku and Ka-band range. Additionally, another ambitious RF engineering project is Project Loon, which aims tocreate a network of high altitude balloons that can provide broadband internet services to areas that are currently not served.