Bigger RFI threat than BPL, IBOC?
 

On Jun 8, 11:51 am, "Frank Dresser"
wrote:
The gee-whiz press reports are calling this a "breakthrough" although the
principles involved have been known since the days of Nikola Tesla.

http://www.itwire.com.au/content/view/12733/1066/

Anyway, this scheme uses resonant coupling "in the megahertz range".

Does anyone know which megahertz range?

Frank Dresser

BBC article stated 10 MHz.
http://news.bbc.co.uk/go/rss/-/2/hi/...gy/6725955.stm

Bigger RFI threat than BPL, IBOC?
 

"ish" wrote in message
ups.com...

BBC article stated 10 MHz.
http://news.bbc.co.uk/go/rss/-/2/hi/...gy/6725955.stm


Thanks. An older link at the side of your linked page has the system at 6.4
Mhz.

http://news.bbc.co.uk/2/hi/technology/6129460.stm

I'm guessing the most useful resonant coupling distances are going to
coincide with SW frequencies. Governments are likely to protect MW and VHF
frequencies, but they'll care much less about SW interference. And this
scheme is never going to be close to 100% efficient and is going to radiate
like all hell.

Fortunately, the picture in the article you gave looks more like some
Heinrich Hertz experiment than a demonstration of a practical application.
Maybe this will be obselete before it's developed.

Frank Dresser

Bigger RFI threat than BPL, IBOC?
 

The Raytheon things-to-build-with-your-CK722 book in the 50s had
a transistor radio powered by a crystal set tuned to the local
MW station.

There's no need for any additional transmitters, in other words.
Just use the radiation that's already there.
--
Ron Hardin


On the internet, nobody knows you're a jerk.

Bigger RFI threat than BPL, IBOC?
 

Tesla re-invented