What you'll need
- Galvanized steel can with a tight lidSee it on Amazon · ~$40
- Cardboard
- Aluminum tape
- Faraday bags (optional)See it on Amazon · ~$40
- 1
Line it
Line the inside completely with cardboard so nothing inside touches the metal.
- 2
Wrap your electronics
Put each device in plastic or a box. Take batteries out.
- 3
Close it tight
Put the lid on and run aluminum tape around the seam.
- 4
Test it
Put a radio inside tuned to a strong station. If the sound cuts out when you close it, the shielding is working.
Tips that make it easier
- Store a cheap radio, two-way radios, a spare phone with offline maps, flash drives with documents, and a small solar charger.
Mistakes to avoid
- Letting devices touch the bare metal.
- Opening it all the time. Keep a separate set for daily use.
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