On Call: Techie fixed Wi-Fi dead zone with a drill

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On Call: Techie fixed Wi-Fi dead zone with a drill

The Register · 2 weeks ago

Eddy, a one-person IT department at an assisted living facility, discovered an unexpected source of Wi-Fi interference whilst troubleshooting an unrelated issue. He found that crimped power cables under a desk were causing electromagnetic interference that disrupted both monitor displays and wireless connectivity. By drilling a new hole to reroute the cables, he resolved both problems, demonstrating how physical cable management can significantly impact wireless signal strength in shared office environments.

The facility's Wi-Fi challenges stem partly from multiple resident routers operating simultaneously throughout the building, creating a crowded RF environment. After extensive troubleshooting left one hallway with persistent dead zones, Eddy was investigating why monitors connected to a desk stand would cut out whenever the door slammed or the desk moved. Upon examination, he identified that the monitor stand was crimping power cables running through a single desk hole, causing electromagnetic emissions that interfered with nearby Wi-Fi. Redrilling the hole and repositioning the cables restored connectivity in that area, though Eddy remains unable to resolve a second dead zone further down the hallway and plans to investigate using specialized radio-detection equipment.

  • Crimped power cables created electromagnetic interference affecting both monitors and Wi-Fi
  • Drilling a new desk hole to relieve cable tension solved both problems unexpectedly
  • Facility still has one unresolved Wi-Fi dead zone requiring further investigation

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