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hardware

Boosting Router Wi-Fi Signal With Custom Firmware

Flashing a consumer router with DD-WRT turned a weak signal and an expensive upgrade into a free afternoon project.

MS

Mohamed Shamil

IT Administrator & Hobbyist Developer

Jul 9, 20115 min read
#networking#dd-wrt#wifi

The Problem With a Big House

Wireless internet is great until you're in a room far from the router and the signal strength drops off. The obvious fix is buying a more powerful (and more expensive) router — but a friend suggested flashing the existing one with better firmware instead.

Enter DD-WRT

After some research, DD-WRT turned out to be the most reliable and capable router firmware available, and it's free. Flashing it took less than three minutes, and the difference was immediate.

What You Get

DD-WRT unlocks a long list of features that stock router firmware usually leaves out:

  • Dynamic DNS updates, so your router stays reachable even with an IP that changes every time you reconnect
  • A built-in Wi-Fi hotspot mode
  • VPN, SSH, and Telnet access
  • Fine-grained transmit power (Tx Power) adjustment

The Fix

Bumping the Tx Power value up significantly boosted the signal throughout the house — no new hardware required. DD-WRT supports the vast majority of consumer routers, which makes turning a cheap router into a feature-rich one a genuinely free upgrade.

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