Building a radio in 10 minutes

Building a radio in 10 minutes

Small Ferriloop Crystal Radio Oldie but goodie…In our other crystal radios we wound the coil by hand. In this project we use a much smaller coil with a ferrite rod inside, from our catalog. The ferrite rod allows the coil to be smaller, and it can be moved in and out of the coil for coarse tuning. Link.

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