The space age began in 1957 launching the first artificial satellite Sputnik I in the former USSR, which was carrying a radio beacon which emits a signal at frequencies 20 and 40 Mhz. this signal could be received by simple receivers throughout the world the first test performing transmission and reception of signals from space.
umri nafasi alianza katika 1957 uzinduzi kwanza bandia satellite Sputnik mimi katika USSR ya zamani, ambayo ilikuwa imebeba beacon redio ambayo inatoa ishara katika frekvenser 20 na 40 Mhz. ishara hii inaweza kuwa na kupokelewa na kupokea rahisi katika dunia ya kwanza mtihani maonyesho maambukizi na mapokezi ya ishara kutoka nafasi.