C1 1 Tuning Capacitor
C2 1 0.1uf Disc Capacitor
R1 1 10 Meg 1/4 W Resistor
D1 1 1N34 Germanium Diode
U1 1 741 Or Similar Op Amp
L1 1 "Loopstick" Antenna
MISC 1 IC Socket, Crystal Earphone, Wire, Antenna
1 - The antenna can be a piece of wire or a telescoping antenna. 18 inches is a good length for in the city.
2 - The tuning capacitor is a regular broadcast band tuning capacitor. I got mine from a junked AM radio. I got the loopstick antenna from that same radio.
3 - You can change L1 and C1 to recieve different bands (eg. Shortwave). To recieve shortwave, try this: Make L1 30 turns of 30 gauge wire wound on a film can and make C1 a 10-365pf capacitor.
4 - Combine this circuit and the 8 Watt Audio Amp for a really neat radio.
C2 1 0.1uf Disc Capacitor
R1 1 10 Meg 1/4 W Resistor
D1 1 1N34 Germanium Diode
U1 1 741 Or Similar Op Amp
L1 1 "Loopstick" Antenna
MISC 1 IC Socket, Crystal Earphone, Wire, Antenna
1 - The antenna can be a piece of wire or a telescoping antenna. 18 inches is a good length for in the city.
2 - The tuning capacitor is a regular broadcast band tuning capacitor. I got mine from a junked AM radio. I got the loopstick antenna from that same radio.
3 - You can change L1 and C1 to recieve different bands (eg. Shortwave). To recieve shortwave, try this: Make L1 30 turns of 30 gauge wire wound on a film can and make C1 a 10-365pf capacitor.
4 - Combine this circuit and the 8 Watt Audio Amp for a really neat radio.
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