RadioBanter

RadioBanter (https://www.radiobanter.com/)
-   Antenna (https://www.radiobanter.com/antenna/)
-   -   Has "antenna" died? (https://www.radiobanter.com/antenna/145617-has-antenna-died.html)

J. Mc Laughlin July 31st 09 03:51 AM

Has "antenna" died?
 
Dear Group: While I attend only now-and-then, it seems as it has been days
since new communications have been posted.

Something might have changed with my ISP or I asserted some secret
instruction.

73, Mac N8TT

--
J. McLaughlin; Michigan, USA
Home:



tom July 31st 09 04:35 AM

Has "antenna" died?
 
J. Mc Laughlin wrote:
Dear Group: While I attend only now-and-then, it seems as it has been days
since new communications have been posted.

Something might have changed with my ISP or I asserted some secret
instruction.

73, Mac N8TT


You're fine. Sometimes it's just quiet.

Art is in an institution or fresh back with good meds. Others are
probably busy with it being summer. Those of us in the upper midwest
haven't had a "normal" summer yet this year which is just fine by me.
Bring on the drought, bring on more cold summers!

tom
K0TAR

Ed July 31st 09 05:35 AM

Has "antenna" died?
 

Art is in an institution or fresh back with good meds. Others are
probably busy with it being summer. Those of us in the upper midwest
haven't had a "normal" summer yet this year which is just fine by me.
Bring on the drought, bring on more cold summers!



Tom, this wierd summer ( or lack of it ) has applied to the Pacific
Northwest, too.... except for the past week.

Ed K7AAT




Richard Clark July 31st 09 06:43 AM

Has "antenna" died?
 
On Thu, 30 Jul 2009 22:51:24 -0400, "J. Mc Laughlin"
wrote:

Dear Group: While I attend only now-and-then, it seems as it has been days
since new communications have been posted.


Hi Mac,

'tis the nature of things. Participation has been falling from the
peak of 1999-2001, down by about 6dB on average, but 10dB for July (if
posting volume were power, mostly dissipated heat; double that if you
think of postings as lost potential).

The posting count follows the classic battleship curve of emerging
then declining fads, fashion, schools of thought, what-have-you social
trends. We are now as engaged as we were in 1995. Consult:
http://groups.google.com/group/rec.r...na/about?hl=en

I would not speculate or offer that counts indicate quality, however.

73's
Richard Clark, KB7QHC

Dave July 31st 09 01:46 PM

Has "antenna" died?
 

"Ed" wrote in message
. 192.196...

Art is in an institution or fresh back with good meds. Others are
probably busy with it being summer. Those of us in the upper midwest
haven't had a "normal" summer yet this year which is just fine by me.
Bring on the drought, bring on more cold summers!



Tom, this wierd summer ( or lack of it ) has applied to the Pacific
Northwest, too.... except for the past week.

Ed K7AAT


but at least all the 'normal' kooks are taking a vacation or got their meds
caught up. sure reduces the noise level in here quite a bit.


Cecil Moore[_2_] July 31st 09 02:51 PM

Has "antenna" died?
 
tom wrote:
... bring on more cold summers!


Caused, no doubt, by Global Warming. :-)
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

J. Mc Laughlin July 31st 09 03:11 PM

Has "antenna" died?
 
Dear Richard and Group: Ah so!

Since I have taken to automating the purging of notes from authors-of-noise,
it occurred to me that I might have turned up the squelch too high. I am
relieved to know that is probably not the case.

In the matter of antennas: my esteemed colleague AB8T's EM class' antenna
project was a great success. Students designed UHF TV antennas (Channels
14-51) using EZNEC5+, constructed the antennas, and then had their
performance compared to expected. It was an opportunity for students to
learn-by-doing in several areas. As readers on this group know well,
antennas involve several areas of science and engineering. The one
important area not covered because it was thought too far from EM, was the
issue of survivability in the presence of wind/ice loads.

73, Mac N8TT

--
J. McLaughlin; Michigan, USA
Home:
"Richard Clark" wrote in message
...
On Thu, 30 Jul 2009 22:51:24 -0400, "J. Mc Laughlin"
wrote:

Dear Group: While I attend only now-and-then, it seems as it has been
days
since new communications have been posted.


Hi Mac,

'tis the nature of things. Participation has been falling from the
peak of 1999-2001, down by about 6dB on average, but 10dB for July (if
posting volume were power, mostly dissipated heat; double that if you
think of postings as lost potential).

The posting count follows the classic battleship curve of emerging
then declining fads, fashion, schools of thought, what-have-you social
trends. We are now as engaged as we were in 1995. Consult:
http://groups.google.com/group/rec.r...na/about?hl=en

I would not speculate or offer that counts indicate quality, however.

73's
Richard Clark, KB7QHC




Richard Clark July 31st 09 05:57 PM

Has "antenna" died?
 
On Fri, 31 Jul 2009 10:11:32 -0400, "J. Mc Laughlin"
wrote:

Dear Richard and Group: Ah so!

Since I have taken to automating the purging of notes from authors-of-noise,
it occurred to me that I might have turned up the squelch too high. I am
relieved to know that is probably not the case.

In the matter of antennas: my esteemed colleague AB8T's EM class' antenna
project was a great success. Students designed UHF TV antennas (Channels
14-51) using EZNEC5+, constructed the antennas, and then had their
performance compared to expected. It was an opportunity for students to
learn-by-doing in several areas. As readers on this group know well,
antennas involve several areas of science and engineering. The one
important area not covered because it was thought too far from EM, was the
issue of survivability in the presence of wind/ice loads.


Hi Mac,

It sounds like you will survive this fading battleship curve by having
secured your own life boat with these class projects - congratulations
to AB8T.

Myself, I find more interesting "antenna" applications being designed
at the nanoscale in a remarkable field called Surface Plasmon
Resonance.

73's
Richard Clark, KB7QHC

-.-. --.-[_2_] July 31st 09 11:32 PM

Has "antenna" died?
 

"Richard Clark" ha scritto nel messaggio
...

Myself, I find more interesting "antenna" applications being designed
at the nanoscale in a remarkable field called Surface Plasmon
Resonance.

73's
Richard Clark, KB7QHC


Myself, still keep alive the interest on antenna and this group simply with
a rock-stable state of mind that concern in don't ever buy a commercial
antenna.

My 2 cents,

-.-. --.-



-.-. --.-[_2_] July 31st 09 11:32 PM

Has "antenna" died?
 

"Richard Clark" ha scritto nel messaggio
...

Myself, I find more interesting "antenna" applications being designed
at the nanoscale in a remarkable field called Surface Plasmon
Resonance.

73's
Richard Clark, KB7QHC


Myself, still keep alive the interest on antenna and this group simply with
a rock-stable state of mind that concern in don't ever buy a commercial
antenna.

My 2 cents,

-.-. --.-




tom August 1st 09 04:23 AM

Has "antenna" died?
 
Cecil Moore wrote:
tom wrote:
... bring on more cold summers!


Caused, no doubt, by Global Warming. :-)


Of course, but it's "Climate Change", that way no matter what happens it
the fault of humanity.

On a similar note, has anyone noticed how the sun's output has a lot to
do with the climate? And that it sort of tracks what's going on? Ok,
tracks quite well.

tom
K0TAR

Cecil Moore[_2_] August 1st 09 03:47 PM

Has "antenna" died?
 
tom wrote:
On a similar note, has anyone noticed how the sun's output has a lot to
do with the climate? And that it sort of tracks what's going on? Ok,
tracks quite well.


Something else that tracks quite well is the size
of the ice caps at the North Poles of both Earth
and Mars proving, beyond a doubt, that there must
be intelligent life on Mars generating emissions
that effect Climate Change, just like here. :-)
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

tom August 3rd 09 03:32 AM

Has "antenna" died?
 
Cecil Moore wrote:
Something else that tracks quite well is the size
of the ice caps at the North Poles of both Earth
and Mars proving, beyond a doubt, that there must
be intelligent life on Mars generating emissions
that effect Climate Change, just like here. :-)


So what we have proof of here is that alien life exists and is much
further advanced than we are!

I think The President should spend billions of dollars on this!
Actually billions is nothing in this blow money on crap budget, we
should spend a trillion on it. THIS IS IMPORTANT!!!! And there is no
one with more smarts than The President (TM).

tom
K0TAR


Art Unwin August 3rd 09 03:50 AM

Has "antenna" died?
 
On Jul 31, 8:51*am, Cecil Moore wrote:
tom wrote:
... bring on more cold summers!


Caused, no doubt, by Global Warming. :-)
--
73, Cecil, IEEE, OOTC, *http://www.w5dxp.com


Cecil, your observation regarding the breakage of the ice caps tells
us that we are moving back to a particular climate that in the past
was normal! We can learn about that and past environments by
examining the different layers of ice. The last ice cap to shear
revealed a
reed coracle occupied by people in animal fur holding stone tools.
None of these had green cards which emphasizes what goes around comes
around with additions supplied by man














Michael Coslo August 3rd 09 05:52 PM

Has "antenna" died?
 
Art Unwin wrote:
On Jul 31, 8:51 am, Cecil Moore wrote:
tom wrote:
... bring on more cold summers!

Caused, no doubt, by Global Warming. :-)
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com


Cecil, your observation regarding the breakage of the ice caps tells
us that we are moving back to a particular climate that in the past
was normal!


There is no such thing as a normal climate. It changes over time, and
short term is very variable.



We can learn about that and past environments by
examining the different layers of ice. The last ice cap to shear
revealed a
reed coracle occupied by people in animal fur holding stone tools.
None of these had green cards which emphasizes what goes around comes
around with additions supplied by man


Man has no effect upon the weather? Fine, show me the mechanism by which
the retention of heat in the atmosphere is not affect by the percentage
of greenhouse gases and water vapor. We would not exist without the
effect, so discarding the effect is impossible.

So now, WHY is the increased percentage being negated. To show a heat
retention effect is not difficult, middle school students do it all the
time.

But what we get is political statements. A political statement declaring
that the greenhouse effect doesn't exist is just as valid as noting
that since the present administration has been in office, there haven't
been any hurricanes. So therefore, there are less hurricanes when
Democrats are in office. Of course that's a stupid statement. But both
statements are. non-sequitar maximus.

BTW, mining the available data to produce one anomalous result is just
as bogus. The creationists and lunar landing hoaxers have been doing
that for years. You have to produce the theory first, then find
supporting or refuting facts. The deniers don't produce an alternate
theory - they only try to disprove.


- 73 de Mike N3LI -

Cecil Moore[_2_] August 3rd 09 11:25 PM

Has "antenna" died?
 
Art Unwin wrote:
We can learn about that and past environments by
examining the different layers of ice.


You're right, Art. The last Global Warming cycle
peaked about 8000 years ago and ever since, the
average temperature has been drifting down toward
the next ice age. That is obvious to anyone who can
read a graph.

http://upload.wikimedia.org/wikipedi...core-petit.png

Global Warming is the second biggest hoax ever
perpetuated upon mankind.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

Cecil Moore[_2_] August 3rd 09 11:34 PM

Has "antenna" died?
 
Michael Coslo wrote:
Man has no effect upon the weather? Fine, show me the mechanism by which
the retention of heat in the atmosphere is not affect by the percentage
of greenhouse gases and water vapor. We would not exist without the
effect, so discarding the effect is impossible.


Therefore, get rid of all the water and CO2? It
appears from the following graph that C02 density
is a lagging indicator introducing the next ice age.
25000 years from now, those greenhouse gases will
come in really handy.

http://upload.wikimedia.org/wikipedi...core-petit.png
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

Wayne August 4th 09 12:38 AM

Has "antenna" died?
 

"Cecil Moore" wrote in message
...
Michael Coslo wrote:
Man has no effect upon the weather? Fine, show me the mechanism by which
the retention of heat in the atmosphere is not affect by the percentage
of greenhouse gases and water vapor. We would not exist without the
effect, so discarding the effect is impossible.


Therefore, get rid of all the water and CO2? It
appears from the following graph that C02 density
is a lagging indicator introducing the next ice age.
25000 years from now, those greenhouse gases will
come in really handy.

http://upload.wikimedia.org/wikipedi...core-petit.png
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

-
Besides that.....earth has bigger catastrophic threats than CO2.



Michael Coslo August 4th 09 03:26 PM

Has "antenna" died?
 
Cecil Moore wrote:
Michael Coslo wrote:
Man has no effect upon the weather? Fine, show me the mechanism by
which the retention of heat in the atmosphere is not affect by the
percentage of greenhouse gases and water vapor. We would not exist
without the effect, so discarding the effect is impossible.


Therefore, get rid of all the water and CO2?


Hmmm, did you get that I was inferring that from saying we would not
exist without the Greenhouse effect? I'm not trying to eliminate everyone.




It
appears from the following graph that C02 density
is a lagging indicator introducing the next ice age.
25000 years from now, those greenhouse gases will
come in really handy.


Aren't you arguing both sides of the issue now, Cecil? If Greenhouse
induced warming is bogus, then those gases won't come in handy, will they?

Given that climate change is going to happen regardless of human input,
I'd make a guess that at the turning point of a heating cycle, the
oceanic currents will shift, due to loss of ice blockage at the poles.
Then, the change is agumented/mitigated by solar output. Also
augumenting/repressing is effects such as atmospheric dust and sulfur
dioxide content, and yes, the amount of greenhouse gases in the atmosphere.

All this gives rise to varying average temperatures, and depending on
the timing, can make a greater or lesser cooling or heating effect.

Now given that there is a lot of natural variability, does it follow
that humans should pay no mind to their own additions to the load?

I believe that we need to find out the effect, and the extent of the effect.

Taking the idea of the greenhouse gases coming in handy, I can envision
being at one of those sharp drops in Temperature, and using gases to
moderate the temperature. There is a lot of Methane in the form of
clathrate hydrates, that might just spell the survival of humanity. Or
maybe not. Maybe we should know what it will do.


http://upload.wikimedia.org/wikipedi...core-petit.png


Looks to me like a pretty fair correlation, Cecil. Now what I am
interested in is the event that occurred at those peaks, and also the
valleys. It's fairly sharp. I don't doubt that as things rapidly cooled,
that there was a reduction in CO2 in the atmosphere. What was the cause?
It's a great graph for speculation. Interestingly regular.

- 73 de Mike N3LI -







Cecil Moore[_2_] August 4th 09 04:19 PM

Has "antenna" died?
 
Michael Coslo wrote:
What was the cause?


Certainly not homo sapiens. I strongly suspect
the primary source of energy in our solar system
is the cause. Now what could that be?
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

Michael Coslo August 4th 09 04:27 PM

Has "antenna" died?
 
Cecil Moore wrote:
Michael Coslo wrote:
What was the cause?


Certainly not homo sapiens. I strongly suspect
the primary source of energy in our solar system
is the cause. Now what could that be?


Some would say God....... ;^)


- 73 de Mike N3LI -

Michael Coslo August 4th 09 04:49 PM

Has "antenna" died?
 
Cecil Moore wrote:
Michael Coslo wrote:
What was the cause?


Certainly not homo sapiens.


Okay, then what is the mitigating mechanism for mankind to not have an
effect? We are increasing the percentage of greenhous gases. Why does it
not have an effect?



I strongly suspect
the primary source of energy in our solar system
is the cause. Now what could that be?


It would take an absolute idiot to not think that the sun was the major
influence on the temperature of the earth. But I don't think that it
follows that man has no effect on the system.

A prime example is the planet Mercury. It catches quite a bit more solar
radiation than we do on earth. But the parts not catching the solar
radiation aren't warm at all. And Venus, which catches more than we do,
has temperatures that are much higher than would otherwise be expected,
and these temps are not in areas directly exposed by the sun.


Now what could that be?


That was a little condescending wasn't it?

- 73 de Mike N3LI -

Richard Clark August 4th 09 04:55 PM

Has "antenna" died?
 
On Tue, 04 Aug 2009 11:27:48 -0400, Michael Coslo
wrote:

Some would say God....... ;^)


They might also say it was retribution for those satan worshiping
Neanderthals except for the fact the world has been around only as
long as the first quarter inch of the graph.

Maybe the 394 thousand years before creation was an annealing process.
The latest news of McCain voting down the Clunker's Bill (What? not
going to give us back our own money? Still some bankers without their
last year bonus?) suggests the latest spike is to anneal out the
remaining Neanderthal DNA.

73's
Richard Clark, KB7QHC

Cecil Moore[_2_] August 4th 09 07:10 PM

Has "antenna" died?
 
Michael Coslo wrote:
Okay, then what is the mitigating mechanism for mankind to not have an
effect? We are increasing the percentage of greenhous gases. Why does it
not have an effect?


The Global-Warming/Ice-Age cycle has been primary and we
are 8000 years into the next ice age. If man has any effect
at all, it will be to delay the onslaught of the next ice age.
Indeed, this ice age cycle seems to be somewhat delayed
compared to the previous ones.

Seems that you are asking for proof that man doesn't have
any effect. That's a lot like asking for proof that God
doesn't exist. The onus of proof is upon those who assert
the positive. Nobody has proven that man is or can be the
anywhere near the primary cause of global warming. The
ice-core temperatures prove that the most severe global
warming(s) occurred before man ever existed.

But I don't think that it
follows that man has no effect on the system.


I think you would agree that plants have much more of an
effect than man? Plants love CO2 and produce O2. There
was a time in the past when the oxygen level was double
what it is today and dragonflies had a wingspan equal to
my armspan. Believing that man has a drastic effect on the
present global temperatures is akin to believing that the
earth is the center of the universe, i.e. delusions of
grandeur, e.g. Al Gore.

Now what could that be?


That was a little condescending wasn't it?


It's called a rhetorical question. :-)
I ask a lot of rhetorical questions.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

JIMMIE August 11th 09 10:20 PM

Has "antenna" died?
 
On Jul 30, 11:35*pm, tom wrote:
J. Mc Laughlin wrote:
Dear Group: * While I attend only now-and-then, it seems as it has been days
since new communications have been posted.


Something might have changed with my ISP or I asserted some secret
instruction.


73, * Mac * N8TT


You're fine. *Sometimes it's just quiet.

Art is in an institution or fresh back with good meds. *Others are
probably busy with it being summer. *Those of us in the upper midwest
haven't had a "normal" summer yet this year which is just fine by me.
Bring on the drought, bring on more cold summers!

tom
K0TAR


Hes back things should pick up.


No Name July 16th 11 06:29 PM

Has "antenna" died?
 
well your still here 2 years on....


All times are GMT +1. The time now is 05:43 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
RadioBanter.com