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Question

Add a 3rd W21...or something else?

  • January 14, 2026
  • 1 reply
  • 13 views

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I replaced my Comcast hardware with the T25 cable modem and a pair of W21s to good effect some time ago. After moving things around, my desk and MacBook is separated from the primary W21 by a wall and closet and the satellite by a ceiling.  The MacBook loses the Wifi signal intermittently/often, and it can be restored by grading the MacBook and rolling my desk chair backward a few feet. I’m thinking about adding a 3rd W21 as a second satellite; it will be in direct unobstructed alignment with both the main W21 and the  MacBook.  My question is, is this the right approach or should I be doing something different? Thanks in advance for your sage advice.

1 reply

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A single W21 can cover up to 2,750 sq. ft. Together, the main unit and the satellite can provide coverage of up to 5,500 sq. ft., even accounting for potential interferences such as concrete walls or nearby microwave ovens. If your space is larger than this, you may want to consider adding another satellite for optimal performance.

To ensure flawless coverage, place both the main unit and the satellite in a centralized location and keep them away from sources of interference.