Uploaded February 2026 | Updated September 2026, 2 weeks ago

---

In this video we'll analyze a very simple two-tone signal using Audacity. Specifically, we'll look at the "Attention Signal" broadcast by the former Emergency Broadcast System (EBS) and the current Emergency Alert System (EAS).

SUPPORT
buymeacoffee.com/thetechprepper/membership

SHOP
shop.thetechprepper.com

RESOURCES
Audacity: audacityteam.org
Sample Audio: upload.wikimedia.org/wikipedia/commons/transcoded/0/07/Emergency_broadcast_system.ogg/Emergency_broadcast_system.ogg.mp3

0:00 Intro
3:04 Audacity - Plot Spectrum
6:51 Audacity - Spectrogram
8:50 Close

#thetechprepper #sigint #audacity