Re: LF: Loop TX antennas at VLF?

[wolf_dl4yhf <dl4yhf@freenet.de>]

Hi Scott,

you wrote:
>The practicality of a loop would depend on its size and the tuner 
design.   Stable caps would be needed and these caps would be very 
expensive which resulted in my thoughts drifting to the concept of a 
gyrator.  Essentially an inductor used to simulate a cap with suitable 
active components...  Google 'gyrator'.
<

Ummm.. active components indeed .. I only know Gyrators in very old 
narrow-band VLF receiver designs, only low signal handling capabilities.
Wouldn't these 'active components' be essentially a power amplifier 
capable of driving highy reactive loads ?
If we had such an output driver, we wouldn't need a tuner... more or less.

Or am I missing something ?

Cheers,
   Wolf  .