Loading Coils; was : Vincent antenna
 

Tom Donaly wrote:
Slap it on your truck, and tell us at what frequencies it resonates.
Can you get it to resonate at odd multiples of its fundamental frequency?

To be entirely technically correct, it should be pointed
out that we are discussing the first resonance as is
usually used in loaded mobile antennas. Starting from
a low frequency, tune the analyzer until the first
resonance is reached. That is when it is electrically
close to 90 degrees in length.
--
73, Cecil http://www.w5dxp.com

Loading Coils; was : Vincent antenna
 

On Sat, 1 Dec 2007 14:15:14 -0500, "AI4QJ" wrote:

Even Richard the Guru agreed that this could not be true.

Hi Dan,

I did?

Such is the seduction of confirmatory bias over the explicit answer to
an explicit question. I warned you about overly elaborate questions.

Imagine, many here wail over my exacting answers demanding something
shorter. The same crowd wails when I comply! Clearly their grief is
because either response plunges a stake into the corpse of logic they
have been trying to revive.

Not agreeing is NOT the same as disagreeing.

Does my status as Guru follow the ephemeral tide of celebrity for
supporting a cause? I could be called a fool for the same reason. I
willingly allow either to be attached to me (it is a conceit of
others, not mine; mine are far above that ordinary rank).

posters stay humble, even decimal point errors, should they
be so bold as to actually back up their statements with "math" (a black art
for many) ;-)

English is much more difficult than math. That is why this is not a
math problem. It isn't exactly an English problem, but both language
and math have been prostituted to serve a clumsy argument with loading
coils. Cecil is especially prone to tripping over pebbles in the road
and exclaiming they are intellectual boulders.

It is fun to watch, however. Tragedy viewed from a distance is called
comedy. Without it, lurkers would evaporate, discussion would wither,
and this group would flicker out.

73's
Richard Clark, KB7QHC

Loading Coils
 

John Smith wrote:
A 90 degree shift in 1/4 wave physical space will never duplicate a 180
shift in the same physical dimensions!

It certainly will never duplicate the radiation pattern
which depends upon physical dimensions. But it may come
close to duplicating the feedpoint impedance which is
what this discussion is about.
--
73, Cecil http://www.w5dxp.com

Loading Coils; was : Vincent antenna
 

On 1 Dec, 10:28, Richard Clark wrote:
On Sat, 1 Dec 2007 09:51:39 -0800 (PST), art
wrote:

O.k.Now you have that off your chest the way is clear for you to point
out the errors and what is needed to correct them.

Hi Arthur,

If you read postings, you would have seen that several times.

For goodness sake, respond to Dan

You wouldn't know his name if I hadn't already responded many times!
Please, do pay attention. ;-)

Your weak appeal reminds me of a moment in "How Green Was My Valley"
(one of those stories set in that land you left and written by a
nemesis Richard Llewellyn) where Cyfartha urges Dai Bando into a
fight, but doesn't want to risk a punch to his own nose:
"Tis a coward I am. But I will hold your coat."

You pick a very poor place to talk about cowardice!
At that time Mr Kennedy Snr stated that islands of Britain
could not possibly stave off the armies that had overun Europe
So it was decided to film 'How green is my valley' in California
in its entirety, staving off any possibility of having to take
on the Nazis as Churchill called them. Fortunately the US was
willing to hold on to our coats
Art Unwin KB9MZ....xg (uk)
snip

Marques of Queensberry... And happy I am to pass on my knowledge to
you. "

73's
Richard Clark, KB7QHC

Loading Coils; was : Vincent antenna
 

Gene Fuller wrote:
I have stared at the W8JI web page
http://www.w8ji.com/inductor_current_time_delay.htm
for a long time, and I just cannot find anyplace where he mentions 4.5
degrees. Is that your calculation rather than Tom's?

Good Grief, Gene. Do you not know how to change ns of
delay to degrees of delay at 4 MHz? Assuming that some
posters may not know how, here's how.

Degrees of delay = 360(ns of Delay/WL/c)

The wavelength at 4 MHz is 246 feet. W8JI tells us that
the speed of light is 0.9821 ft/ns. That makes the delay
for a 3 ns delay equal to 4.47 degrees.
--
73, Cecil http://www.w5dxp.com

tesla coils antennas maxwell Loading Coils; was : Vincentantenna
 

Mike Kaliski wrote:
The Philadelphia Experiment was a success?

What? Haven't you seen the movie?
--
73, Cecil http://www.w5dxp.com

Loading Coils; was : Vincent antenna
 

On 1 Dec, 11:46, Richard Clark wrote:
On Sat, 1 Dec 2007 14:15:14 -0500, "AI4QJ" wrote:
Even Richard the Guru agreed that this could not be true.

Hi Dan,

I did?

.................................................. .........................
Such is the seduction of confirmatory bias
over the explicit answer to .
an explicit question. I warned you about
overly elaborate questions. .

.
Imagine, many here wail over my exacting
answers demanding something .
shorter. The same crowd wails when I
comply! Clearly their grief is .
because either response plunges a stake
into the corpse of logic they .
have been trying to
revive. .
.................................................. ...........................

REMOVED FOR THE SAKE OF BREVITY.....NOT SURE
WHY THAT WAS INCLUDED

Not agreeing is NOT the same as disagreeing.

.................................................. ..............................

.
Does my status as Guru follow the ephemeral tide
of celebrity for .
supporting a cause? I could be called a fool
for the same reason. I .
willingly allow either to be attached to me (it
is a conceit of .
others, not mine; mine are far above that
ordinary rank). .

.
posters stay humble, even decimal point errors,
should they .
be so bold as to actually back up their
statements with "math" (a black art .
for
many) ;-) .

.
English is much more difficult than math. That
is why this is not a .
math problem. It isn't exactly an English
problem, but both language .
and math have been prostituted to serve a clumsy
argument with loading .
coils. Cecil is especially prone to tripping
over pebbles in the road .
and exclaiming they are intellectual
boulders. .

.
It is fun to watch, however. Tragedy viewed
from a distance is called .
comedy. Without it, lurkers would evaporate,
discussion would wither, .
and this group would flicker
out. .
.................................................. ..............................

REMOVED FOR THE SAKE OF BREVITY DON'T KNOW HOW
THAT GOT IN TO THIS DEBATE

Se Richard, two lines got the job done.Next time concentrate
on technical substance if you are aware of any


73's
Richard Clark, KB7QHC

Vincent antenna
 

Art wrote:
"The above antenna does not have a ground plain such that it is
unbalanced."

Does that mean that it does not have "equilibrium"?

A ground-plane antenna is unbalanced too, as both haves of the antenna,
its radiator, and its nonradiating balanced radials, aren`t equally
coupled or equally decoupled with respect to the earth. A horizontal
dipole is balanced as both its halves are equally coupled to the earth
if construction is ideal.

Best regards, Richard Harrison, KB5WZI

Loading Coils; was : Vincent antenna
 

On Sat, 1 Dec 2007 11:56:55 -0800 (PST), art
wrote:

You pick a very poor place to talk about cowardice!
At that time Mr Kennedy Snr stated that islands of Britain
could not possibly stave off the armies that had overun Europe

Hi Arthur,

This week in class I learned from Ambassador Thomas Graham that
Hitler's second in command came to England and asked Neville
Chamberlain to reject Hitler's conditions for moving into
Czechoslovakia. He informed Chamberlain that the German High Command
was ready to topple Hitler if England showed strength.

We all know the rest of the story....

73's
Richard Clark, KB7QHC

Loading Coils; was : Vincent antenna
 

Richard Clark wrote:
... when asked if I agreed to a flood of operations when the
concept is so easily proven wrong, I didn't want to search for the
trivial error.

Thanks Richard, that applies to 99% of your postings. :-)
--
73, Cecil http://www.w5dxp.com