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Straight Radio or Crystal Radio


OA70 / IN34 / IN60 is Germanium Radio, choose only one type. Antenna high from Ground is high is possible, ground is a must to Steel Water pipe, or making one from a piece of copper approximately 1 meter down to the ground, so will be voltage between ground and radio wave pick up by antenna.

I have build this Radio and connected input speaker to line input notebook and running with Open Lab software and can pick up Radio Signal from about 6 km air distance.

====+  Parts List for   +====

10 nF                              1   Capacitor
VC 500 pF                     1   Variable Capacitor
OA70/IN34/IN60          1   D
GND                              1   GND
108 Turns,12 Turns        L Tap between 108 Turns and 12 Turns
8-2000 Ohm                  1   SPKR or Earphone 8 - 2000 Ohms


This is one of Product of Crystal Radio Kit with Mineral Gateway as Diode and without Battery, this crystal radio specification :

  • Conduct a radio wave experiment
  • Capture AM broadcasting radio waves
  • Works without the need of a battery
  • Science guide included (68 color pages)
  • Another fun, educational product from the company that brings you Snap Circuits





3 comments:

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    ReplyDelete