Stealth comms 100 years ago, in the trenches of World War One

Field telephones and Morse telegraphs were both in use in the trenches in World War One. Generally these were single wire systems, sometimes tens of km long, with the terminal equipment at both ends earthed to complete the circuit. It didn’t take long for someone to realise that this created ground currents, and that these ...

Stealth comms 100 years ago, in the trenches of World War One

from ElectronicsWeekly http://www.electronicsweekly.com/blogs/engineer-in-wonderland/stealth-comms-100-years-ago-in-the-trenches-of-world-war-one-2016-07/