This is an adjustable coil for a mediumwave DIY detector-radio.
For most of the most popular stations in Europe you'll need about 30 turns which gives an impedance of 50 - 180 uH. Frequency range is about between 550kHz and 1100kHz.
If you like this thing, you're probably interested in building this one:
| Schieber.stl | 74.9KB | |
| Spule.stl | 165.7KB |
