Re: Tiny DRSST was Re: Ultra tiny coils!

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>

So far, they are less than 1% of the 1/4 wave frequency.  Like regular 
coils, their small size compared to the RF wavelengths renders them poor 
transmitters.

If say cable lengths get near 108 inches, might want to put ferrite beads 
on them to block the RF.

Cheers,

        Terry


At 10:35 PM 2/11/2005, you wrote:
> In a message dated 2/12/05 12:25:19 AM Eastern Standard Time, 
> tesla@xxxxxxxxxx writes:
>
> I admit I've never tried anything in the 20-30Mhz range, but I'm sure with
> the right drive a 20-30Mhz coil is possible.
>
> The issue that scares me is the detuning of the secondary with changing
> conditions and accurately tracking that with such low powers and small
> coils. At 27Mhz 1nS delay from feedback to driver becomes quite a problem.
> Maybe a CB PLL could help ??
>
>  Hi,
>
> has anyone considered the possible problems of operating a coil with peak 
> output in the CB / RC bands? Could result in some unhappy friends and 
> neighbors. Just a thought.
>
> Matt D.