The mw is an E probe. E is the volts/metre: a difference in potential
between two points in space. So the little copper plate comprising the
mw antenna is at one potential and the other is the coax shield which
is at the same potential as earth, unless I have I'm holding my mw and
ft817 above the ground. The signal is weak when the 817 are at the same
height (or in the same point in space). This seems straightforward;
perhaps through excessive simplification or outright ignorance, I've goofed
something up. Hawking and friends at the Perimiter Institute seem to be
wondering if time and space are simply artefacts of consciousness or silly
human sentiments. If so, this could play havoc with E as defined above.
On a more practical theme, Op32 on 137.555 kHz 3 amps of RF from a pair
of Decca modules to a monopole starting soon. Reports most welcomed, and
gratitude to DF6NM for his opds reports online.
73
Joe VO1NA
On Wed, 10 Jul 2013, pat wrote:
AND Warren, there are those who hold that the only place from which we may
observe our universe is from one of the other(s)!
At this point in the narrative the little folk like me retreat deeply into
papers and books by the likes of Hawking and Penrose :>)))
73
On 10/07/13 20:06, Warren Ziegler wrote:
Pat,
"*There is a theory <https://en.wikiquote.org/wiki/Theory> which states
that if ever anyone discovers exactly what the Universe
<https://en.wikiquote.org/wiki/Universe> is for and why it is here, it will
instantly disappear and be replaced by something even more bizarre and
inexplicable. **There is another theory which states that this has already
happened."*
*-Douglas Adams*
On Wed, Jul 10, 2013 at 2:53 PM, pat <[email protected] <mailto:[email protected]>>
wrote:
Of course, it also holds to be true that the "rest of the
universe" that is the "other plate" of my capacitor is also the
"other plate" of everyone else's similar capacitor and is the
common circuit element to which we are all referenced!
73
On 10/07/13 18:30, Pieter-Tjerk de Boer wrote:
On Wed, Jul 10, 2013 at 05:58:44PM +1000, edgar wrote:
Surely every conductor in the unit will have a difference
in potential
due to being in a electromagnetic field.
Even in the legs of the FET. Although the potential will
be extremely small.
Yes, of course that's correct.
I should have written that with a fiber optic cable instead of
the coaxial
cable, all circuit elements are coupled to the field at
_almost_ the same
place, and thus are at _almost_ the same potential, and thus
_almost_ no
signal will come out: very much less than with the coax still
in place.
B.t.w., some mini-whips are built using a metal can as the
probe, with
the entire electronics inside the can; such an arrangement
would get
quite close to zero output when the coax is replaced by the
fiber optics.
Anyway, it was originally claimed that the functioning of the
mini-whip
does not depend on the coaxial cable; I just intended to
explain why I
think it does.
73, Pieter-Tjerk, PA3FWM
-- 73 de pat g4gvw
es gd dx
qth nr Felixstowe
East Coast UK
--
73 Warren K2ORS
WD2XGJ
WD2XSH/23
WE2XEB/2
WE2XGR/1
--
73 de pat g4gvw
es gd dx
qth nr Felixstowe
East Coast UK
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