5N10.67 - Crystal Radio Set

Code Number:
5N10.67
Demo Title:
Crystal Radio Set
Condition:
Excellent
Principle:
Electromagnetic Radiation
Area of Study:
Electricity & Magnetism
Equipment:
Crystal Radio Set with Germanium Diode, crystal radio set with Galena Crystal, and cats whisker.
Procedure:

Stretch out 50 to 100 ft. of antenna and ground the crystal radio unit to a copper pipe or some other good ground.  Listen with the ear phones and tune to the nearest AM radio station.

References:
  • William H. Baird, "Article About Coherer Applauded", TPT, Vol. 60, #1, Jan. 2022, p. 5.
  • Christopher Chiaverina, "Demonstrating the Beginnings of Radio Communications", TPT, Vol. 59, #8, Nov. 2021, p. 664.
  • William DeBuvitz, "More Crystal Set Memories", TPT, Vol. 52, # 5, May 2014, p. 260.
  • Ronald E. Jodoin, "A Mirco-oversight", TPT, Vol. 52, # 5, May 2014, p. 260.
  • Thomas B. Greenslade Jr., "The Crystal Set, TPT, Vol. 52, # 4, April 2014, p. 210.
  • Thomas B. Greenslade, "Crystal Set (Photo)", AJP, Vol. 79, # 9, Sep. 2011, p. 931.
  • Thomas B. Greenslade, Jr., "Crystal Set Tuner (Photo)", AJP, Vol. 74, # 11, Nov. 2006, p. 1039.
  • Thomas B. Greenslade, Jr., "Crystal Set Tuner (Photo)", AJP, Vol. 73, # 4, April 2005, p. 307.
  • Cy Tymony, "Bonus Application", Sneaky Uses for Everyday Things, p. 65.
  • A. D. Bulman, "Simple Radio Receivers", Model-Making for Physics, p. 165.
  • Simon Quellen Field, "Radios", Gonzo Gizmos, p. 85 - 115.
  • Simon Quellen Field, "Building a Three-Penny Radio", Gonzo Gizmos, p. 122.
  • W. Bolton, A Simple Radio Receiver", Book 4 - Electricity, Physics Experiments and Projects, 1968, p. 87-88.

Disclaimer: These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist.  The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose.  The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources.  Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks.  These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage.  Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.