This is a Tesla Coil capable of putting out 80,000 to 100,000 volts from the secondary of the large vertical coil.

This close up on the right shows the components.
In the lower left is an auto-transformer that allows you to adjust the amount of AC going into the system.
Next, on the lower right is an Ignition coil which says output is 6000 volts (but for what input?).
The brown block in the middle is a high voltage capacitor (very high voltage).
Then in the upper left is a spark gap and the spark gap feeds the main coil on the upper right.
This thing will put out an arc that will jump a gap of 4-6 inches and will light up everything in the area...hahah.
I know someone is going to complain that his is not a radio.....but let me assure you this thing will be heard on every receiver within a mile around. So it is a pretty good transmitter.
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