Tesla’s Spirit Radio uses a simple crystal radio circuit connected to a computer sound-in jack to generate spooky sounds from all kinds of electromagnetic sources. As you will see, it creeped the hell out of Tesla himself, according to Higher.
Build a free standing tower Detailed Description You will receive the drawing package so you can build your own tilt up tower. To be used for Ham radio antennas or wind turbines. It is constructed of 2 lengths