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Old July 4th 07, 03:33 AM posted to sci.electronics.basics,rec.radio.amateur.antenna,alt.cellular.cingular,alt.internet.wireless,sci.physics
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Default How can such a small device -- a wrist watch -- receive such long-wave radio signals?

On 3 Jul, 04:43, Christopher Cox
wrote:
I start to believe only the CIA/FBI could be doing something like this
because they are the smartest and most evil *******s in the universe.
Cold-hearted CIA f-kfoams.


I get the feeling that the exploitative sadistic CIA/FBI know about
science that ordinary USA citizens are not allowed to know about.


I then want the CIA/FBI to suffer for what I perceive as their
"stinginess".


Anyways...


So I guess it is possible to have analog AM cell phones operating
between 40 KHz and 285 KHz that are the same small size as today's
cell phones. Right? If it's not possible then why not? If a wrist
watch can do it, then why not a cell phone?


All this for 245kHz of band space in a frequency area of high noise and
long propagation paths.

Engineering would dictate looking elsewhere.

But hey, you want to try, go ahead. I believe there are allocations in
the above spectrum for transmitting a couple watts into a antenna less
than three feet long. I would think a wrist watch transmitter would qualify.

Google up VLF, melt some solder, and let us know how you do.

Chris- Hide quoted text -

- Show quoted text -


Chris, the antenna used in wrist watches can only be used to store
information.
Since the antenna is based on superconductors the watch has to be
cooled to a extremely low temperature
before the data becomes accessable.That method has not been made
public outside the military.
One can consider the analogy of cold weather antennas generally known
where under certain environmental conditions transmission can be
stored, and with the onset of warm weather ice particles in the shape
of dots and dashes gradually emerge in data form so the transmission
can be decoded.
If you wash your arms and hands with your watch strapped on then time
is on your side as decoding is near impossible.
Art

 
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