The simplest radio circuit

5 piece kit consisting of the first half pretty simple and inexpensive radio circuit with a stylish casing made ​​of wood and plexiglass think should be reinforced with output amplifier fm radio circuit has two different 🙂

simple radio circuit

I have heard, even from a physicist, that it is impossible to build FM crystal radios. On the other hand some experimenters claim that they have built them.

L – 4 turns #18 copper or silver wire, 12mm inside diameter, tapped at 2.5 turns
Ant – 7 inches of #18 bare copper wire
C1 – 18 pf ceramic capacitor
C2 – 50 pf air variable capacitor
D – 1N34 diode or rock crystal
R – 150K resistor

L – 5 turns AWG#18 bare copper or silver wire, 12mm inside diameter, tapped at 2.5 turns
D – 1N34 or rock crystal diode
C1 – 82 pf capacitor
C2 – 80 pf air variable capacitor
C3 – 18 pf capacitor
R – 150K resistor

source solomonsmusic.net