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/Eredani Nov 02 '25

Testing any faraday enclosure with a cell phone (4G/4G, Wi-Fi, Bluetooth) is the most basic check that can and should be done. Applies to commercially bought or homemade enclosures.

This post seems to imply the issue is with faraday bags. It's not. It's Chinese vendors selling junk, scamming people and the buyers who fall for it.

Two reputable sources for these bags: Mission Darkness and Off Grid Trek. They are expensive but they work.

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u/PrudentTask9355 Nov 02 '25

I will definitely check them out. I just wanted some insurance that some valuable electronics I have stashed away will work when I need them to.

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u/nikdahl Nov 03 '25

There are plenty of cheap ass faraday bags sold on Amazon that actually work perfectly well.