this post was submitted on 20 Jun 2025
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[–] [email protected] 44 points 23 hours ago (23 children)

Hmm I don't think I get this one.

Is it because its in a cage? I don't think that will do much to block the WiFi antenna.

[–] [email protected] 26 points 20 hours ago* (last edited 20 hours ago) (3 children)

Wifi is a fickle beast, though you may be right.

The elements of the cage will probably interfere, but won't straight up block the signal. To be an effective faraday cage, holes in the material must be no bigger than 1/10th the wavelength.

2.4GHz wifi has a wavelength of 12cm, and 5GHz is about 5cm...so holes in the cage should be no bigger than 1.2cm for 2.4GHz, or 0.5cm for 5GHz.

I may expect some signal reflection and likely a high noise floor as a result to being so close to a hunk of metal. That'll cause some problems.

Problem #1 is this AP is oriented vertically on a wall. The antennas in these models are designed to be parallel to the floor, and usually not much higher than 15ft.

[–] TriflingToad 10 points 17 hours ago (1 children)

2.4GHz wifi has a wavelength of 12cm

that's actually massive, I thought it would be like half a centimeter at most

[–] zqps 8 points 16 hours ago* (last edited 16 hours ago) (1 children)

Newer standards are substantially shorter at 5GHz and 6GHz, but this comes at the cost of significantly worse signal penetration through walls.

[–] [email protected] 2 points 10 hours ago

Which in a gym will be will be fine.

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