1 Mineral Radio DIY Assembly Kit. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
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Without an external variable capacitor the on board coil ( Inductor) should pick up Radio 5 Live ON 909KHZ, this may be different in your area so an external capacitor may be required. Any Variable capacitor from an old radio should do.
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This transmitter is designed for low power consumption and minimal interference, making it suitable for schools and training institutions. This transmitter is perfect for teaching and student research projects.
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Selling as per photographs untested a vintage christal radio set along with 2 sets of Sterling London headsets but only one headband. The oak box measures 23cm tall by 24.7cm wide and 18.9cm deep. No key
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1 Mineral Radio DIY Assembly Kit. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
eBay
eBay
Come out of a house clearance don’t know but about them open to offers 
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You'll also get a bonus: your DIY AM radio will function as a radio tuner! AM radio stations can be picked up and played using this electrical circuit. Crystal radios don't use batteries or connectors for power; instead, they harness the energy of the radio waves themselves.
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