RCR Wireless
  • News
  • Channels
    • 5G
    • 6G
    • BSS OSS
    • Carriers
    • IoT
    • Network Infrastructure
    • Open RAN
    • Private 5G
    • Telco AI
    • Telco Cloud
    • Test & Measurement
  • Resources
    • Reports
    • Webinars
    • White papers
    • AI Fundamentals
    • Analyst Angle
    • Editorial Calendar
    • Fundamentals
      • 5G NR Release 17
      • AI
        • Telco AI in 2025
    • Podcasts
      • Let’s Get Digital with Carrie Charles
      • Wireless Connectivity to Enable Industry 4.0 for the Middleprise
      • Well Technically…
      • Will 5G Change the World
      • Accelerating Industry 4.0 Digitalization
  • AI Infrastructure
  • Programs
  • Events
  • RCRtv
  • Advertise
  • Subscribe
Tuesday, September 15, 2026
RCR Wireless
  • News
  • Channels
    • 5G
    • 6G
    • BSS OSS
    • Carriers
    • IoT
    • Network Infrastructure
    • Open RAN
    • Private 5G
    • Telco AI
    • Telco Cloud
    • Test & Measurement
  • Resources
    • Reports
    • Webinars
    • White papers
    • AI Fundamentals
    • Analyst Angle
    • Editorial Calendar
    • Fundamentals
      • 5G NR Release 17
      • AI
        • Telco AI in 2025
    • Podcasts
      • Let’s Get Digital with Carrie Charles
      • Wireless Connectivity to Enable Industry 4.0 for the Middleprise
      • Well Technically…
      • Will 5G Change the World
      • Accelerating Industry 4.0 Digitalization
  • AI Infrastructure
  • Programs
  • Events
  • RCRtv
  • Advertise
  • Subscribe
Add RCR Wireless as a preferred source on Google
  • Qualcomm 6G Insights
  • Huawei Content Hub
  • Qualcomm – 6G Vision
  • OSS/BSS Channel
  • RCRTech Roundtable: AI Infrastructure
RCR Wireless
RCR Wireless
  • Advanced Mimo
  • Mobile mmWave
  • 5G Positioning
  • Green Networks
  • Metaverse
  • Automotive
  • Industrial and Wide-area IoT
Copyright 2021 - All Right Reserved
Home - 9/11: From repeaters to jammers
Archived ArticlesTowers

9/11: From repeaters to jammers

by RCR Wireless News April 11, 2005
written by RCR Wireless News April 11, 2005 Share
LinkedinEmail
Share 0LinkedinEmail
128

It undoubtedly will take years to sort out why some first-responder communications worked and why some did not after terrorists navigated jet planes into the World Trade Center on Sept. 11, 2001. But it appears one suspected culprit has been exonerated.

The National Institute of Standards and Technology last week said that while communications and information sharing were lacking shortly after the two skyscrapers were struck and human life inside wantonly violated, damaged repeaters and/or improper operation of them were not to blame as some initially suspected. It was only after the second towering inferno collapsed that the operable repeater ceased to relay radio transmissions, according to investigators.

While NIST characterized its analysis of the World Trade Center disintegration as “the most detailed examination of a building failure ever conducted,” it will not be the final word on the matter. Persistent probing and further finger-pointing will continue.

If policy-makers are truly interested in honoring those who lost lives and in ensuring that their deaths were not in vain, they will get serious about improving first-responder communications and eliminating weak links in systems. This means interoperability, funding, enhanced 911, spectrum and lots more.

“Like most building collapses, these events were the result of a combination of factors,” said Shyam Sunder, lead investigator for the agency’s building and fire safety investigation into the WTC disaster. “While the buildings were able to withstand the initial impact of the aircraft, the resulting fires that spread through the towers weakened support columns and floors that had fireproofing dislodged by the impacts. This eventually led to collapse as the perimeter columns were pulled inward by the sagging floors and buckled.”

Substitute communications collapse for building collapse, and I believe the same explanation holds: There likely are multiple reasons why public-safety wireless transmissions did not perform under circumstances arguably beyond comprehension at that moment in time. Some might argue that is the point: Someone should have foreseen the possibility of reality terrorism on American soil.

The ripple effect continues.

Attorney General Alberto Gonzales and FBI Director Robert Mueller were on Capitol Hill last week asking lawmakers to renew a USA Patriot Act that some critics-left and right-fear will lead to a world of perpetual- on-demand-free-and-easy wiretaps and other more inspired modes of surveillance.

Meantime, in a distant land called Iraq, the focus is not on how to boost radio signals but rather how to jam them. The problem is deadly serious: remotely detonated IEDs (improvised explosive devices). Cell phones set off these roadside bombs. Not enough U.S. tanks are equipped with jammers, frustrated lawmakers say. It makes wanting to rid the ether of those annoying cell-phone conversations seem rather trivial.

You Might Also Like
  • American Tower sees European consolidation as growth opportunity
  • American Tower sees AI, 5G, and spectrum driving infra demand
  • China Tower shifts to ‘digital’ and ‘intelligent’ towers
  • Inwit defends tower contracts amid dispute with Italian carriers
  • TIM CEO outlines the telco’s tower strategy
  • American Tower raises outlook on AI, data demand
Share 0 LinkedinEmail
RCR Wireless News

previous post
Financial Briefs
next post
Firefighter union seeks funding for tower health study

White Papers

  • Norton eBook: The 2026 Telco Playbook

  • Enea White Paper: Why Intelligent AAA is the Swiss Army Knife of Telecom

  • CSG White Paper: Telco AI Enabler: Mediation’s Defining Role

  • Enea White Paper: Scalable Database Design for 5G and Beyond

  • Supermicro and NVIDIA Whitepaper: Powering sovereign AI at scale

Editorial Reports

  • Report: Building 6G — Aligning technology, policy and purpose

  • Report: Rethinking the RAN

  • Report: Building AI-Era Network Fabrics

Webinars

  • Appledore Webinar: Closing the Agent-Ready Data Gap for Autonomous Networks

  • Mimosa Webinar – Build the Right Network

  • Webinar: Building 6G — aligning technology, policy and purpose

  • SIMCom Webinar: Scaling your next deployment – from plastic to provisioning

  • Webinar: Rethinking the RAN as AI, cloud and openness converge

Since 1982, RCR Wireless News has been providing wireless and mobile industry news, insights, and analysis to mobile and wireless industry professionals, decision makers, policy makers, analysts and investors.

Facebook Twitter Youtube Linkedin Envelope Rss

Useful Links

  • Subscribe
  • About RCR Wireless News
  • Contact Us
  • Advertise
  • Editorial Calendar
  • Archive
  • RSS
  • Wireless News Archive
  • Subscribe
  • About RCR Wireless News
  • Contact Us
  • Advertise
  • Editorial Calendar
  • Archive
  • RSS
  • Wireless News Archive

Edtior's Picks

Verizon identifies uplink, spectrum and standards hurdles on road to 6G
Closing digital skills gap could unlock $3.5 trillion
New 6G clubs, old 5G duds? (Telco Diary)

Latest Articles

Verizon identifies uplink, spectrum and standards hurdles on road to 6G
Closing digital skills gap could unlock $3.5 trillion
New 6G clubs, old 5G duds? (Telco Diary)
American Tower sees European consolidation as growth opportunity

© 2026 RCR Wireless News All Right Reserved. Developed by Eight Hats.

Cookie Policy | Privacy Policy

RCR Wireless
  • News
  • Channels
    • 5G
    • 6G
    • BSS OSS
    • Carriers
    • IoT
    • Network Infrastructure
    • Open RAN
    • Private 5G
    • Telco AI
    • Telco Cloud
    • Test & Measurement
  • Resources
    • Reports
    • Webinars
    • White papers
    • AI Fundamentals
    • Analyst Angle
    • Editorial Calendar
    • Fundamentals
      • 5G NR Release 17
      • AI
        • Telco AI in 2025
    • Podcasts
      • Let’s Get Digital with Carrie Charles
      • Wireless Connectivity to Enable Industry 4.0 for the Middleprise
      • Well Technically…
      • Will 5G Change the World
      • Accelerating Industry 4.0 Digitalization
  • AI Infrastructure
  • Programs
  • Events
  • RCRtv
  • Advertise
  • Subscribe
RCR Wireless
  • News
  • Channels
    • 5G
    • 6G
    • BSS OSS
    • Carriers
    • IoT
    • Network Infrastructure
    • Open RAN
    • Private 5G
    • Telco AI
    • Telco Cloud
    • Test & Measurement
  • Resources
    • Reports
    • Webinars
    • White papers
    • AI Fundamentals
    • Analyst Angle
    • Editorial Calendar
    • Fundamentals
      • 5G NR Release 17
      • AI
        • Telco AI in 2025
    • Podcasts
      • Let’s Get Digital with Carrie Charles
      • Wireless Connectivity to Enable Industry 4.0 for the Middleprise
      • Well Technically…
      • Will 5G Change the World
      • Accelerating Industry 4.0 Digitalization
  • AI Infrastructure
  • Programs
  • Events
  • RCRtv
  • Advertise
  • Subscribe
@2020 - All Right Reserved. Designed and Developed by PenciDesign