Listen to shortwave radio:To do this you’ll need something called an upconverter, which you can buy for about $50. An upconverter tunes frequencies below 25MHz up so you can pick them up with your RTL-SDR adapter. Below 25MHz you can pickup all sorts of stations including AM radio, ...
aIn short, this work will remain exactly as it was intended in 1974: The Complete Shortwave Listener's Handbook. 简而言之, 1974年这工作将确切地依然是,它意欲: 完全短波听众的手册。[translate] amidam midam[translate] aWhat do you want to be when you grow up? 什么,当您长大时,您要成为?[...