2018-06-25 Update: DIY a radio in 10 minutes
Step 1: Materials Needed A ferrite loop antenna coil, ferrite magnet can move in and out of the coil for coarse tuning. An adjustable capacitor. One germanium diode. A piezoelectric headset. Two spring clip wire jumpers. 15M long stranded insulated wire as antenna, you can use TV or radio antenna as an alternative. A wooden board or other thing as a base.It is really a simple radio, pls see the pic above. The black wire on the coil is connected to the lead in the middle of the adjustable ca...
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