EMP-shield for small devices

[Proud Prepper]

1. Set the radio to a powerful FM station and turn up the volume.
2. Put it in the Faraday cage and listen to see if the radio station is still audible. If it doesn’t work, don’t get too hyped; FM signals are rather easy to shield against.
3. Set the AM mode to “on.” Next, retest by tuning to a strong AM radio station. The low frequency of AM waves is particularly effective at passing through objects.