In a world of mobile phones, satellites and the internet, some old school technology is making a major comeback. The short wave radio, used by spies for decades to send encrypted messages, is being resurrected for the war in Ukraine.
In a world of mobile phones, satellites and the internet, some old school technology is making a major comeback. The shortwave radio, used by spies for decades to send encrypted messages, is being resurrected for the war in Ukraine.