Jimmie D wrote:

Cecil Moore wrote:
Dave (from the UK) wrote:
http://www.pmillett.com/Books/Kraus_antennas.pdf (7.9 MB)

This is great, Dave. Everyone who wants to see the standing
wave phase shift up and down a 1/2WL antenna can look at
page 239. Kraus shows a ~3 degree phase shift all up and
down the antenna. EZNEC shows the same thing. Now how did
Roy use this current to determine the phase shift through
a loading coil if it cannot be used to determine the phase
shift through a wire?
--
73, Cecil http://www.w5dxp.com

A real shame you cant copy and paste text from a pdf file.

Jimmie

You can, IF the document page(s) wasn't/weren't scanned as an image. For
text to be searchable, the scanning device would need to have "Optical
Character Recognition" capability.
Bryan WA7PRC

"Jimmie D" wrote in message
...

Everyone who wants to see the standing
wave phase shift up and down a 1/2WL antenna can look at
page 239.

A real shame you cant copy and paste text from a pdf file.

If your needs are modest, you can, at least in Windows.

(1) Get the desired text as large as you can on the screen.
(2) Press the Print Scrn key
(3) Open the "Paint" program
(4) Click File NewEditPaste
(5) Trim and resize as desired, using the few available features in Paint.
(Too much increase will start to show jaggies, as this is a primitive
process.)

Admittedly, the result is not editable, but it might work for you.

"Sal M. Onella" wrote in message
...

"Jimmie D" wrote in message
...

Everyone who wants to see the standing
wave phase shift up and down a 1/2WL antenna can look at
page 239.

A real shame you cant copy and paste text from a pdf file.

If your needs are modest, you can, at least in Windows.

(1) Get the desired text as large as you can on the screen.
(2) Press the Print Scrn key
(3) Open the "Paint" program
(4) Click File NewEditPaste
(5) Trim and resize as desired, using the few available features in Paint.
(Too much increase will start to show jaggies, as this is a primitive
process.)

Admittedly, the result is not editable, but it might work for you.





I was thinking in terms of posting excerpts on the newsgroup. Binaries are
frowned upon here

Jimmie

Jimmie D wrote:
I was thinking in terms of posting excerpts on the newsgroup. Binaries are
frowned upon here

OCR software could be used for ASCII text but without the
equations and graphics, excerpts are of limited usefulness.
Here's how I solved the quoting problem:

http://www.w5dxp.com/krausdip.jpg

http://www.qsl.net offers free web pages to amateur radio
operators.
--
73, Cecil http://www.w5dxp.com

OCR = Optical Charactor Recognition

recognises charactors in a graphics file/picture and can pull them
out..........P


"Cecil Moore" wrote in message
...
Dave (from the UK) wrote:
http://www.pmillett.com/Books/Kraus_antennas.pdf (7.9 MB)

This is great, Dave. Everyone who wants to see the standing
wave phase shift up and down a 1/2WL antenna can look at
page 239. Kraus shows a ~3 degree phase shift all up and
down the antenna. EZNEC shows the same thing. Now how did
Roy use this current to determine the phase shift through
a loading coil if it cannot be used to determine the phase
shift through a wire?
--
73, Cecil http://www.w5dxp.com

That is a credit to that guy , thumbs up from me :-) ....
"Dave (from the UK)"
wrote in message ...
There is a scanned copy of a book you may find interesting:

----
Antennas, John D. Kraus, Ph.D.., 1950, 553 pages

This book is a college text and engineering reference on antennas. A
pretty thorough theoretical treatment along with practical information
on antenna design.
-----

See

http://www.pmillett.com/Books/Kraus_antennas.pdf (7.9 MB)

More books at

http://www.pmillett.com/technical_books_online.htm

Apparently the copyright has expired on these books, so they are not
pirated. I actually own a copy of the Kraus book, but it is attractive
to have a copy on my laptop.


--
Dave (from the UK)

Please note my email address changes periodically to avoid spam.
It is always of the form:
Hitting reply will work for a few months only - later set it manually.

http://chessdb.sourceforge.net/ - a Free open-source Chess Database

Dave (from the UK) wrote:
There is a scanned copy of a book you may find interesting:

----
Antennas, John D. Kraus, Ph.D.., 1950, 553 pages

This book is a college text and engineering reference on antennas. A
pretty thorough theoretical treatment along with practical information
on antenna design.
-----

See

http://www.pmillett.com/Books/Kraus_antennas.pdf (7.9 MB)

More books at

http://www.pmillett.com/technical_books_online.htm

Apparently the copyright has expired on these books, so they are not
pirated. I actually own a copy of the Kraus book, but it is attractive
to have a copy on my laptop.


Dave,

Thank you so much for this post. I had the pleasure of attending some
of his classes. As you Brits say, "outstanding chap!"

Paul
WD8OSU

"Dave (from the UK)" writes:

There is a scanned copy of a book you may find interesting:

----
Antennas, John D. Kraus, Ph.D.., 1950, 553 pages

This book is a college text and engineering reference on antennas. A
pretty thorough theoretical treatment along with practical information
on antenna design.
-----

See

http://www.pmillett.com/Books/Kraus_antennas.pdf (7.9 MB)

More books at

http://www.pmillett.com/technical_books_online.htm

Apparently the copyright has expired on these books, so they are not
pirated. I actually own a copy of the Kraus book, but it is attractive
to have a copy on my laptop.

I don't know the rules for when copyright expires in different
countries. But I do know that John Kraus died in July 2004. I have the
3rd edition of his "Antennas", it is from 2001. The front matter says
"Copyright 1950, don't remember, 2001"

So I am not sure that the 1950 edition is in the public domain.

Kraus was a very interesting character. Invented ham antennas in the
thirties, the helix antenna ca. 1945, central in the development of
radio astronomy, and finally one of the driving forces behind SETI at
home.

Of course, it is much easier to keep up with the times if you shape
them yourself :-)

73
Jon

Dave (from the UK) wrote:
There is a scanned copy of a book you may find interesting:

----
Antennas, John D. Kraus, Ph.D.., 1950, 553 pages

This book is a college text and engineering reference on antennas. A
pretty thorough theoretical treatment along with practical information
on antenna design.
-----

See

http://www.pmillett.com/Books/Kraus_antennas.pdf (7.9 MB)

More books at

http://www.pmillett.com/technical_books_online.htm

Apparently the copyright has expired on these books, so they are not
pirated. I actually own a copy of the Kraus book, but it is attractive
to have a copy on my laptop.


--
Dave (from the UK)

Please note my email address changes periodically to avoid spam.
It is always of the form:
Hitting reply will work for a few months only - later set it manually.

http://chessdb.sourceforge.net/ - a Free open-source Chess Database

Dave,
That is a most welcome collection, and very worthy of bookmarking. Thank
you!
73,
Bryan WA7PRC

Dave (from the UK) wrote:
There is a scanned copy of a book you may find interesting:

----
Antennas, John D. Kraus, Ph.D.., 1950, 553 pages

This book is a college text and engineering reference on antennas. A
pretty thorough theoretical treatment along with practical information
on antenna design.
-----

See

http://www.pmillett.com/Books/Kraus_antennas.pdf (7.9 MB)

More books at

http://www.pmillett.com/technical_books_online.htm

Apparently the copyright has expired on these books, so they are not
pirated. I actually own a copy of the Kraus book, but it is attractive
to have a copy on my laptop.

The copyright on that edition was renewed in 13 November 1978
(Registration # RE-7-717, original reg# A47618), so it's still in
copyright (until 95 years after publication: year 2045). This isn't
particularly unusual, since it's a standard textbook, and the second
edition didn't come out until 1988, so the publisher would have made
sure the copyright was renewed, even if W8JK didn't.

Jim