Podcast:99% Invisible Published On: Fri Dec 20 2013 Description: If you tune around on a shortwave radio, you might stumble across a voice reciting an endless stream of numbers. Just numbers, all day, everyday. These so-called “numbers stations,” say nothing about where they are transmitting from or who they … Continue reading → Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.