An errant Emergency Broadcast System transmission made television watchers and radio listeners worry about the threat of nuclear war on Feb. 20, 1971.

Today was the day for the US government’s big emergency alert drill, which sent a test message to every TV, radio and cell phone in the nation. Starting at approximately 2:20 pm ET on Wednesday ...

The first national emergency broadcasting system in the U.S. was created in 1951 as a way for the government to use radio networks to warn the nation of an enemy attack during the Cold War.

New York (CNN) — Today was the day for the US government’s big emergency alert drill, which sent a test message to every TV, radio and cell phone in the nation. Starting at approximately 2:20 ...

On Wednesday at 2:20 p.m. ET, every TV, radio and cellphone in the U.S. should blare out the electronic warning tone of an emergency alert.

A sample Emergency Alert System broadcast. Note the digital sounds of the alert data and the warning message cut-in. Don’t play this on radio or TV lest you want the attention of the FCC.

CLAIM: An emergency broadcast system test on Oct. 4 will send a signal to cell phones nationwide in order to activate nanoparticles such as graphene oxide that have been introduced into people’s ...

On May 1st, about a day after Bluefield disclosed the hacking episode, Avos apparently used its access to the school’s network to take control of its emergency broadcast system.

CLAIM: An emergency broadcast system test on Oct. 4 will send a signal to cell phones nationwide in order to activate nanoparticles such as graphene oxide that have been introduced into people’s ...

Claim: An emergency broadcast system test on Oct. 4 will send a signal to cell phones nationwide in order to activate nanoparticles such as graphene oxide that have been introduced into people’s ...

The early morning alert was a test but the outrage was real. Many in Florida were woken up at 4:45 a.m. on Thursday by a notification on their phones from the Emergency Alert System: “TEST ...

Get ready, it's coming. On Wednesday, Oct. 4 at 2:20 p.m. ET/11:20 a.m. PT, your cellphone, radio or TV will blare a jarring electronic noise that signals a test of the nationwide Emergency Alert ...