Tesla Coil as an antenna]

[Andre Kesteloot]

Tom Tishken KD4WOV wrote:

> Hello,
>   I have not experimented in a while with my partially built tesla coil, but
> has anyone used their Tesla coil as an antenna for ELF or other Freqs? If we
> try to use it for 137 KHz how do you determine ERP?
>
>   I had one I was building a few years ago using a 555 timer as an
> oscillator with a buffer. Followed by a Darlington pair diving a pair of
> power transistors. never got past the primary coil, due to frying the
> primary wire with too much current (i.e. too small of a current limiting
> resister and too much drive).