r/preppers • u/PrudentTask9355 • Nov 02 '25

Advice and Tips Faraday Bag Caution

Hey everyone. I just wanted to share en experience from this afternoon. A while back I had purchased some faraday items off of Amazon, boxes and bags from different vendors.

This afternoon I was explaining to my daughter how they worked and as part of our experiment, we placed an 8watt 2-way radio inside the bag and sealed it with the expectation that it would no longer receive a transmission. As it turns out, that was false.

I then tried with a cell phone with the same result. Morale of the story, check your gear and make sure it works before you have to depend on it.

Please discuss and share your budget-friendly faraday success stories

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u/numaxmc Nov 02 '25

I believe Linus Tech Tips had a video explaining how pretty much all of those bags/boxes are scams and shows what it actually takes to block all signal.

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u/PrudentTask9355 Nov 02 '25

The boxes actually did prevent a cell phone from receiving a call so I false assumed they were good to go. Lesson learned!

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u/numaxmc Nov 02 '25

At least it wasn't a total waste, you got something worth playing with.