RTTY Demonstration: What the Signal Sounds Like
Kelly Klaas · Demo · 3 min · 2010 · YouTube title: RTTY DEMO 012710.wmv
Why it's here
HN commenters link it as a sound sample when discussing data-over-audio projects that resemble RTTY.
What it covers
A short demonstration of radioteletype (RTTY), a digital communication mode used in amateur radio, showing what the signal sounds like.