This is a French expression, silence radio, which is used in the navy, for example—when you cannot use the radio because the enemy is near. It’s not an expression I use regularly; I used it once, maybe, to describe my period of inner silence, which mostly happens when I’m back home, coming from Houston. The long weeks or months of silence. So it’s the opposite of inspiration; it’s the time of doing other things. Waiting.
Todd Samuelson, AGNI Online, 25 April 2003 source ↗