Adjustable coil for mediumwave (MW) DIY detector radio
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This is an adjustable coil for a mediumwave DIY detector-radio. For most of the most popular stations in Europe you'll…
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- Printables
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- Creative Commons — Attribution — Noncommercial
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:
http://www.thingiverse.com/thing:425768
Instructions
You'll need the following parts to build the most simple form of radio - the detector:
1x printed coil housing with handle for ferrite rod
1x ferrite rod (standard type with two flat sides), length: 4 cm (1.57inch)
1x diode (germanium type) AA 112 or similar
1x ceramic capacitor 470 pF
1x crystal earpiece (very high impedance of abt. 2000 ohms)
30 m / 98 feet of 0.4 mm / AWG 26 laqued copper wire for the antenna (20 m) and ground connection (10 m).
Category: Electronics