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user_3aea03
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Thursday, December 16th, 2021 3:16 PM

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My XFINITY modem won't stop broadcasting wifi

Hi all, I am trying to stop my XFINITY white modem from broadcasting wifi. I logged into the modem itself and disabled both 2.4 and 5 ghz. I do not see those SSIDs broadcasting. I went to my XFINITY dashboard and disabled the hotspot there. I too do not see the xfinitywifi SSID broadcasting, nor the XFINITY SSID. However, I have an RF meter here and that box is still radiating an incredible amount of energy for supposedly not broadcasting any wifi.

I have also narrowed it down to the modem. I unplugged it and my machine room completely quieted down. And when I turn the modem back on, the radiation measured goes straight through to maximums.

How do I turn off the wifi radiation coming from the modem completely? 

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3 years ago

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EG

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110K Messages

3 years ago

The gateway still broadcasts an additional "Hidden" SSID which is used for interfacing with their home security systems. This broadcast can not be disabled.

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user_bb801b

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167 Messages

3 years ago

Sounds like your a bit familiar with Wifi and such. Have you tried packet capture to see what type data is broadcast? With everthing WIFI disabled at the modem, there may be noise emanating from the device but its just nonsense type data (loopback traffic) which inshallah isn't particularly revealing and shouldn't be concerning from privacy/security perspective.

To completely isolate the signals, perhaps there is shielding to employ, wrap device in to manage/block emanations?

Not an official solution, just something the internet suggested.

Thanks and good luck.

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user_3aea03

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@user_bb801b Thanks - I did just wrap it with aluminum foil and that seemed to lower emissions although not completely. I also tried some aluminum mesh which didn't work at all. I guess the holes of the mesh were too large and still let signals escape.

3 years ago

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EG

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110K Messages

3 years ago

@user_bb801b 

Did my reply not explain what is going on ?

(edited)

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user_3aea03

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@EG yes thank you and it is unfortunate. I also went to an Xfinity store and the person there was not technical enough to be helpful. He did give me another modem to try which unfortunately has the same issue. 

I just wrapped it up with aluminum foil and that seemed to remove a lot of the emissions although not all. I just ordered a Motorola cable modem which hopefully will arrive later today. Then I can just swap it out. 

3 years ago

EG

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110K Messages

Yeppers !

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Please mark an Accepted Answer!tick
I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Please mark an Accepted Answer!tick
I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Please mark an Accepted Answer!tick

3 years ago

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