Re: Aluminum tape on toroids? What about the sticky side being nonconducting?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Ed Phillips <evp-at-pacbell-dot-net> 

Tesla list wrote:
 >
 > Original poster: Ed Phillips <evp-at-pacbell-dot-net>
 >
 > "Dave,
 >
 > One thing *you* are forgetting is that at 200-300kHz, a 4" electrode rod
 > placed above the top load is an
 > extremely inefficient radiator.  Its probably negligibly more than what
 > a SSTC radiates by itself.  To get
 > efficient transmission of RF power, you need an efficient antenna.  A
 > 1/2 dipole antenna would have to be
 > 2340 feet for 200kHz.  There are other harmonics, but these are buried
 > quite deeply.
 >
 > Also, SSTCs radiate quite a bit of RF in general.  When I audio
 > modulated my coils, I can pick up the transmissions
 > on my friends HAM set-up (with his huge tower antennas) almost 10 miles
 > away (flat terrain, no hills, mountains, etc...)
 >
 > Dan "
 >
 >         I do something even simpler.  I support the toroid between two fiber
 > board plates, cut so as to leave an inch or so spacing.  Simply wrap
 > kitchen foil around each one and it  forms a continuous conductor.
 >
 > Ed

	Huh?  Reply wasn't to this particular message.  Must be losing it.  I
do agree that short antennas are very lousy radiators at LF.

Ed