How to make an AM radio transmitter for use with a crystal radio or a normal AM radio. This simple circuit uses an oscillator chip and a transformer to take input from a sound source and turn it into radio waves, transmitted using an antenna. I test it with a CD player as the sound source but it may also work with an iPod or iPhone, though it may need some amplification for that.

WARNING: Do not transmit more than 1 or 2 meters/yards otherwise you'll interfere with other radios. In many countries it is illegal to transmit without a license.

For how to make the homemade crystal radio, watch "How to Make/Build a Crystal Radio":
   • How to Make/Build a Crystal Radio  

For how to make the crystal earpiece watch "Make Crystal Earphone/Earpiece for Crystal Radio Homemade":
   • Make Crystal Earphone/Earpiece for Cr...  

For how to make a lifter or ionocraft, watch "How to Make a Lifter":
   • How to Make/Build a Lifter or Ionocraft  

My webpage about how to make a simple AM radio transmitter:
http://rimstar.org/science_electronic...

Where to get a 1 megahertz oscillator chip and an audio transformer:
https://www.scitoyscatalog.com/catego...

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Music used for background:
The Path of the Goblin King Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/b...
ISRC: USUAN1100873