Tom Donaly wrote:
Did you have fun writing that, Cecil? What makes you think the
variation in current in two seperate places of a coil carrying
A.C. is a "current drop?"

My Webster's has 74 definitions of "drop" including: "a decline
in amount" and "diminished or lessened". The current at a current node
has certainly declined from the current loop and is certainly diminished
from the current at a current loop. The only definition of "drop" in the
IEEE Dictionary is "A connection made between a through transmission
circuit and a local terminal unit". The IEEE Dictionary doesn't define
"current drop". Neither do any of my technical reference books.

So Tom, please provide a definition and a reference for your version
of "current drop". I suspect you are as wrong about the definition
of "current drop" as you were about the contents of Balanis' book.
--
73, Cecil http://www.qsl.net/w5dxp
"The current and voltage distributions on open-ended wire antennas are
similar to the standing wave patterns on open-ended transmission lines ...
Standing wave antennas, such as the dipole, can be analyzed as traveling
wave antennas with waves propagating in opposite directions (forward and
backward) and represented by traveling wave currents If and Ib ..."
_Antenna_Theory_, Balanis, Second Edition, Chapter 10, page 488 & 489


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On Sun, 24 Oct 2004 12:50:25 -0500, Cecil Moore
wrote:

So Tom, please provide a definition and a reference for your version
of "current drop".

Hi Tom,

How can you sensibly argue with the village idiot?

73's
Richard Clark, KB7QHC

Richard Clark wrote:
On Sun, 24 Oct 2004 12:50:25 -0500, Cecil Moore
wrote:


So Tom, please provide a definition and a reference for your version
of "current drop".


Hi Tom,

How can you sensibly argue with the village idiot?

73's
Richard Clark, KB7QHC

Hi Richard,
you can't, so I'm just going to ignore him for awhile.
73,
Tom Donaly, KA6RUH

Richard Clark wrote:
Cecil Moore wrote:
So Tom, please provide a definition and a reference for your version
of "current drop".

How can you sensibly argue with the village idiot?

That's pretty cruel, Richard, not allowing even the village idiot
to ask for a reference. How anyone can argue that there is no current
drop between the current antinode (maximum) and the current node
(minimum) is beyond belief. No drop from maximum to minimum is a
concept that would obselete all of human knowledge.
--
73, Cecil http://www.qsl.net/w5dxp
"The current and voltage distributions on open-ended wire antennas are
similar to the standing wave patterns on open-ended transmission lines ...
Standing wave antennas, such as the dipole, can be analyzed as traveling
wave antennas with waves propagating in opposite directions (forward and
backward) and represented by traveling wave currents If and Ib ..."
_Antenna_Theory_, Balanis, Second Edition, Chapter 10, page 488 & 489


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Tom Donaly wrote:
Hi Richard, you can't, so I'm just going to ignore him for awhile.

Don't blame you, Tom. If you are as wrong about "current drop" as you
were about the contents of Balanis' book, ignoring me is perfectly
understandable and the logical thing to do.
--
73, Cecil http://www.qsl.net/w5dxp
"The current and voltage distributions on open-ended wire antennas are
similar to the standing wave patterns on open-ended transmission lines ...
Standing wave antennas, such as the dipole, can be analyzed as traveling
wave antennas with waves propagating in opposite directions (forward and
backward) and represented by traveling wave currents If and Ib ..."
_Antenna_Theory_, Balanis, Second Edition, Chapter 10, page 488 & 489


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On Sun, 24 Oct 2004 14:44:32 -0500, Cecil Moore
wrote:
That's pretty cruel
What a sentimentalist. Wearing a lab coat only makes you a doctor on
TV commercials.

Jimmie wrote:
"I would not even say it is canceled in the far field although this is a
convenient way of looking at radiation."

Kraus writes on page 23 of his 1950 "Antennas":
"Directivity=maximum radiation/average radiation.

The radiation is in watts per sq. mtr.

The famous round balloon example applies. The balloon is filled with so
much air (an analog for the radiated energy). Squeeze the balloon.
Energy like air, increases in the directions it isn`t squeezed in, but
the total amount of air is unchanged and like the balloon air, the
radiated energy total is a constant in the analog.

The idea that energy still exists where suppressed by interference is
illogical.

Best regards, Richard Harrison, KB5WZI

Tom, KA6RUH wrote:
"What makes you think the variation in current in two separate places of
a coil carrying A.C. is a "current drop"?"

You have a voltage deop, a temperature drop, or a drop in almost any
variable. Why not call a decline in current a current drop?

Best regards, Richard Harrison, KB5WZI

Richard Harrison wrote:
You have a voltage drop, a temperature drop, or a drop in almost any
variable. Why not call a decline in current a current drop?

Many examples exist for current drops in distributed networks. That's
one thing that makes circuit analysis invalid for distributed network
problems. The series current is NOT the same value everywhere in a
distributed network. Asserting that there is no such thing as "current
drop" in distributed networks simply indicates an invalid choice of
models.

How much current drop is there at 440 MHz in 100 feet of RG-58 between
the source and a 50 ohm load? Answer: A 20 dB power drop equates to a
40 dB current drop.
--
73, Cecil http://www.qsl.net/w5dxp


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Richard Harrison wrote:
Tom, KA6RUH wrote:
"What makes you think the variation in current in two separate places of
a coil carrying A.C. is a "current drop"?"

You have a voltage deop, a temperature drop, or a drop in almost any
variable. Why not call a decline in current a current drop?

Best regards, Richard Harrison, KB5WZI


If you make clear what you mean and why you think it makes sense
there's nothing wrong with using non-standard terminology if it
aids communication. If you just pull it out of the air as if it
were a normal technical term that all technical people use, then
you're just gassing nonsense. I expect someone on this newsgroup
will start talking about "voltage flow" next.
73,
Tom Donaly, KA6RUH