khoji parkMystery · Chicago · 1987
A Masked Figure Interrupted Two Television Stations in One Night
Unidentified perpetrators interrupt two local station broadcasts using pirate microwave transmissions.
Read in slides1. First Interruption
On November 22, 1987, television viewers in Chicago experienced an unusual broadcast interruption during the evening news on WGN-TV. At 9:14 p.m., the screen went black briefly before displaying an unidentified person wearing a Max Headroom mask and sunglasses. The individual swayed erratically in front of a rotating metal panel while a garbled buzzing sound played. Engineers changed the studio transmitter frequency to terminate the pirate feed after roughly seventeen seconds.
Station anchors expressed confusion before resuming sports coverage.
2. Second Hijacking
Roughly two hours later, a second signal intrusion occurred during a PBS broadcast of Doctor Who on station WTTW. Because no engineers were stationed at the Sears Tower transmitter at that late hour, the perpetrators maintained their transmission longer than before. The masked individual spoke through distorted audio, making cultural references, shouting phrases, and holding up props. The interruption lasted approximately ninety seconds before the intruders ended the feed.
Normal programming resumed automatically after the pirate signal stopped.
3. Technical Execution
Experts determined that the hijackers executed the stunt by deploying a powerful microwave transmitter that overpowered the studio-to-transmitter links. This method exploited a capture effect, requiring significant transmitting equipment and technical expertise. The physical origin point was deduced to be somewhere along the line of sight between the downtown broadcast towers. Investigators concluded the perpetrators likely operated from a nearby high-rise building.
The equipment setup required advanced broadcast knowledge for that era.
4. Official Investigations
In the immediate aftermath, the Federal Communications Commission launched a formal inquiry into the security breach. Agents from the Federal Bureau of Investigation also joined the preliminary fact-finding efforts in Chicago. Officials publicly noted that the perpetrators faced potential fines of up to one hundred thousand dollars and a year in prison. However, investigators struggled to gather sufficient manpower and concrete leads.
Federal agencies pursued potential leads without immediate success.
5. Theories and Motives
Law enforcement and media analysts debated several theories regarding the identity and motives of the culprits. Popular speculation centered on whether the stunt was executed by a disgruntled broadcasting employee or members of a local underground hacker community. Because the broadcast caused no physical damage and did not threaten public safety, investigators treated the incident as a low-priority technical prank.
No formal suspects were ever charged by federal authorities.
6. Statute of Limitations
Under federal rules applicable at the time, the potential criminal offenses carried a five-year statute of limitations. This legal window officially expired in November 1992. Consequently, even if the individuals responsible were discovered in subsequent years, they would no longer face criminal prosecution or incarceration. The expiration effectively closed the official legal chapter of the investigation.
Legal accountability became impossible after the statutory deadline passed.
7. Cultural Resonance
Although the incident lasted only moments, it left a lasting mark on media history and cyberpunk culture. Other local stations humorously incorporated references to the hijacking into subsequent news broadcasts. Over the following decades, the event inspired plots in television shows, documentaries, and digital art projects. Commentators frequently cited the intrusion as an early archetype of digital trolling and media subversion.
The event became a widely recognized reference point in media lore.
8. Legacy of the Hack
The two interruptions were recorded by viewers, leaving evidence of what appeared on screen. Investigators examined how an unauthorized signal could replace the stations’ feeds, but no publicly identified perpetrator was established in the documented inquiry. The recordings therefore show a successful interruption of two broadcasts on the same night without supplying the identities of the people who arranged it.
The broadcasts were recorded; the intruders were not identified.