In your area/country, did you have a word or phrase to describe the static white noise on a television set not tuned to a channel?
(upload.wikimedia.org)
Bonus points if there's a known onomatopoeia to describe the sound.
Dreh die Antenne nach links, ich krieg nur rauschen hier unten.
It would be white noise, “weißes rauschen”, but nobody ever said the “white” part.