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Old November 4th 14, 03:14 AM posted to rec.radio.amateur.antenna
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Default No antennae radiate all the power fed to them!

Jerry Stuckle wrote:

I use Thunderbird also, and just mark the filtered posts as "read".
That way when I go through unread messages it skips over them, yet I can
go back to them if I want.


Real USENET users access news with tin running in an ASCII X11 terminal
window running on Unix.



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Old November 4th 14, 03:33 AM posted to rec.radio.amateur.antenna
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Default No antennae radiate all the power fed to them!

On 11/3/2014 12:37 PM, wrote:
Jerry Stuckle wrote:
On 11/2/2014 6:11 PM,
wrote:
Jerry Stuckle wrote:
On 11/2/2014 3:58 PM,
wrote:
Lostgallifreyan wrote:
wrote in :

Apples and oranges; we already know what will happen if one were to
build an antenna from a superconductor.

Fire up EZNEC and set material loss to zero; done.


Yeah, anyone with a map could say a great deal about the shape of West Africa
based on ocean travel.

Again, apples and oranges as we know EXACTLY and in DETAIL what would happen.

My point isn't so much about antennas, as about
exploring the easy availability of cold environments for superconductors in
space.

Easy availability measured in thousands of dollars an ounce to get
stuff there.

Not having to lug heavy coolers up there might be an offer someone
cannot refuse, and that someone might come back with all kinds of
discoveries, things no models or predictions are going out there to find.

The only thing that makes a superconductor different is the lack of
resistance.

We already know exactly what that means and what we would do with them
if room temperature superconcductors were available.

Here are a couple of things: electric motors and generators that would
be very close to 100% efficient, small, light, and lossless power
transmission lines, lossless transformers, big honking magnets.


It's a little more than just no resistance. For instance,
superconductors will "reflect" (for lack of a better word) a magnetic
field. That's now a superconducting disk will levitate over a magnetic
field. So just setting the resistance to zero doesn't necessarily cut
it. There are other things to consider which EZNIC may not handle properly.

Such as?

In regards to magnetic levitation, a super conductor is a perfect
diamagnet due to the Meissner effect.

None of that has anything to do with antennas.

http://hyperphysics.phy-astr.gsu.edu...ds/maglev.html

http://en.wikipedia.org/wiki/Magnetic_levitation


Are you sure? I haven't seen anything one way or the other on it -
although I'm sure it's been studied.

Can you point at some studies to that effect?


Start with the two links, follow the internal links.



I didn't see a lot on antennas and EM fields in your references or their
links. However, I did fine another very interesting link:

http://ecjones.org/hightc.html

A good article, and not too long. But if you want the gist, scroll down
to where he built a 2 foot antenna for 160 meters in paragraph II.5.

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Old November 4th 14, 09:16 AM posted to rec.radio.amateur.antenna
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Default No antennae radiate all the power fed to them!

wrote in message
...
I have not said anything to embarrass myself. And even if I did,
what's it to you? As I've said before, I find you to be a bigger
horses ass than Gareth. He's just silly and ignorant.


Having studied the subject at degree level, I fear that you
may be bull****ting to cover your own arse.


  #207   Report Post  
Old November 4th 14, 09:17 AM posted to rec.radio.amateur.antenna
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Default No antennae radiate all the power fed to them!

"rickman" wrote in message
...
Ok, you seem to like the drama as much a Gareth.


I do not like drama.

I like technical excellence and adult discussion leading to it.


  #208   Report Post  
Old November 4th 14, 09:18 AM posted to rec.radio.amateur.antenna
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Default No antennae radiate all the power fed to them!

"Brian Reay" wrote in message
...
Mostly people have remained calm but Evans will just keep going and going,
he
has nothing else to do. Judging by what he has posted, he spends his day
stirring and
playing Freecell (the game on Windows favoured by the mentally challenged
receptionist type).

You don't have to troll him, just don't respond to him directly, he really
doesn't like that and you can avoid having
to deal with his abuse. You can, should you wish, discuss a technical
topic
with civilised people. He will be 'standing at the classroom door' like a
disruptive pupil but just ignore him.





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  #209   Report Post  
Old November 4th 14, 09:20 AM posted to rec.radio.amateur.antenna,uk.radio.amateur
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Default No antennae radiate all the power fed to them!

"Brian Reay" wrote in message
...
Mostly people have remained calm but Evans will just keep going and going,
he
has nothing else to do. Judging by what he has posted, he spends his day
stirring and
playing Freecell (the game on Windows favoured by the mentally challenged
receptionist type).
You don't have to troll him, just don't respond to him directly, he really
doesn't like that and you can avoid having
to deal with his abuse. You can, should you wish, discuss a technical
topic
with civilised people. He will be 'standing at the classroom door' like a
disruptive pupil but just ignore him.


Once again, brian, M3OSN, Old Man, you arrive out-of-the-blue with
completely false gratuitous abuse, but not contributing anything technical.

Why do you behave in such a childish manner?

Is it today because of your recent faux pas about Maxwell's Equations?


  #210   Report Post  
Old November 4th 14, 02:29 PM posted to rec.radio.amateur.antenna
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Default No antennae radiate all the power fed to them!

"rickman" wrote in message
...
Ok, you seem to like the drama as much a Gareth.


Try to act your age, OM, and take responsibilty for your
own childish outbursts.



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