Wireless Mains Adapter-Frequency etc.?

[Nick]

All true.

Theory & practice are two different things. I've never built a SRSG Tesla Coil as all the coils I've designed & made have been solid state (normally of a type called DRSSTC - Doubly resonant Solid State Tesla Coil) - they are precision tuned, normally between 100kHz to 400kHz and varying in power between a few watts up to several KW. As the resonant frequency of these devices can vary slighly in operation due to a number of effects, they auto-tune to keep efficiency at a maximum. Top load volatge are between 50kV and maybe 500kV+. Also, they are not CW, they are pulsed with a variable duty cycle which can be audio-modulated to make "musical Tesla Coils" - very much the thing to do at festivals etc.

However, all "coilers" (as we are known) limit RFI by a number of methods - I tended to operate my coils (which are small - I like small stuff) inside Faraday cages, thus obviating the need for extra screening.

I'm not aware of any coiler ever being brought to task by OFCOM or the FCC etc. so either we're doing something right (very possible), or the authorities are failing miserably (equally possible)...