Illegal Radio Jammer

764

15:34:08

Spark transmitters have been outlawed since 1930's.  Soviet shortwave jammers worked similar to this and blanketed end to end over shortwave and other frequencies. No tubes  or solid-state in this circuit.  You could key message to  radio listeners all around ( for a short time).

Capacitor charges near transformer's maximum output voltage then air gap breaks down and spark causes sudden discharge and these  frequency oscillations go out transmitting antenna at upper right.

published 10 years ago

thebugger

10 years ago

You've stumbled upon something weird. At least in EC it's weird. Start opening and closing the ,,antenna'' switch at the upper right corner. You'll see the sinewave is distorting, when it shouldn't. That's pretty weird.

lmccoig

10 years ago

Move node below switch on antenna and seems better to me.

thebugger

10 years ago

No the weird thing is that the switch is not grounded therefore it mustn't conduct current in any way, so what's causing the wave to distort? In reality the changing antenna impedance will result in an output distortion, but here in EC there isn't an antenna component.

hurz

6 years ago

Mr Tesla would love that

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