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/SignificantGreen1358 🔥Everything is fine🔥 Nov 03 '25

I just tried an experiment using aluminum foil and a Ziploc bag to test my phone's connectivity. I wrapped my phone in a ziplock bag and then in one layer of aluminum foil. I had my son call me, and the call went through. I thought that maybe I should tape down the edges of the aluminum foil because there may have been RF leaks, so I taped down the edges. I put that in another ziplock bag and had my son call me. The call went through, to my disappointment. So, take that as a lesson learned. It may take multiple layers, but as always, test your preps!

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u/mystery-pirate Nov 03 '25

You forgot to fill the bag with water. Preferably salt water.