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There are (were?) available plastic Smith charts with a rotatable outer scale and a slide-rule-like cursor, both pivoting on a rivet dead center on the chart. The cursor saved a lot of grease pencil plotting.
My copy of the book included erasable markers colored to match the various chart grids, to easier keep track of whether you were plotting impedances or admittances.
73, Don N2VGU

People seem to do it with variable resistors at input and output and tweak those untill the passband looks nice and flat.
Then the resistors can be measured with a multimeter to find out the impedance.

Hello,
I have a lot of 2 poles filters 20J26 Motorola and 45R15AZ.
I can’t find the datasheet of these filters on the net, except on a site that tells me that the 45R15AZ is a 3rd harmonic filter, but no datasheet.
So I have no value of termination resistance and capacity.
In addition, if you take a common model like a 45M15A, you find different values depending on the manufacturer, it ranges from 560 Ohm/1pf to 4KOhm -1pf.
My question is whether we can measure these values with a nanovna or some other method.
and if you have the datasheet, put it.
Thank you

Thank you! My browser wouldn't let me get it by clicking on the download button. But I was able to open it in pdf and then download.

Al, K2WM

That book text site has a GOLDMINE of super books. Thanks for the link!

The Smith applications text comes with a dozen or so plastic overlays that are used in the text as a means of solving designs. You use a grease pencil.
Almost as munch fun as fooling with the vna. I have the originals and some where I stored away some clear plastic copies that I used in analog powerpoint
presentations!

Alan

My Malwarebytes firewall blocked the above link, and claimed it was due to a Trojan; false positive perhaps???IMHO, With regard to the file size differences of the previous two links to copies. One copy of the book appears to?have been from a book which had been essentially scanned in page by page to create a pdf file. (The pages almost look?like a photocopy). The newer book appears to be a textualized copy of the original book converted to a pdf file.

You can get a free copy of the second edition here:

Rudy N6LF

On 06/08/2022 17:14, Roy J. Tellason, Sr. wrote:

Hm, 27MB as opposed to the 18.6MB from the link that I just posted, and the two sites appear to be*very* similar, if not identical. I wonder what the differences are in the files?

Different editions of the book.

David
--
SatSignal Software - Quality software for you
Web:
Email: david-taylor@...
Twitter: @gm8arv

On Friday 05 August 2022 04:38:10 pm Larry McElhiney via groups.io wrote:

Free PDF download here:



Just downloaded it.

Larry
AC9OX

Hm, 27MB as opposed to the 18.6MB from the link that I just posted, and the two sites appear to be *very* similar, if not identical. I wonder what the differences are in the files?

--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin

On Friday 05 August 2022 03:34:22 pm Jim Lux wrote:

"Electronic applications of the Smith Chart
in waveguide, circuit and component analysis"
Phillip H Smith

This it?




--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin

If you look at a graph of voltage versus discharge time, you will see a knee where the voltage drops quickly just before the battery is fully depleted. If you want to test battery performance read my article QST May 2022 page 34.

Charge the battery and retry.. My battery lasts in excess of 45 minutes.

If you want to know more about batteries I recommend



Larry W8LM

In many cases, a PDF copy of a book is as good, or maybe better, than a hard copy. In
the case of Phillip Smith's book, I would urge you to obtain a hard copy of the book,
if the opportunity occurs, even if you have a PDF copy.

An envelope on the inside back cover of the book contains four transparencies
(overlay charts) that are designed to be written on with a pencil and then erased for
further use:

Chart A - Standard SMITH CHART with normalized series-impedance or shunt-
admittance coordinates.

Chart B - SMITH CHART with normalized parallel-impedance or series-admittance
coordinates.

Chart C - SMITH CHART with normalized negative series-resistance or shunt-
conductance coordinate components.

Chart D - CARTER CHART with polar-impedance coordinates.

73,

Maynard
W6PAP

Bryan has provided the link to the updated 2nd edition that was published in 2000 by SciTech Publishing, Inc.

73 - Dino KL?S

The title of the book is "Electronic Applications Of The Smith Chart"

On 8/5/22 5:14 PM, Donald Hellen wrote:

Is this the book?

You have to go through the process on that website, then let it compress the book before you download it. I have no idea if it's in the public domain at this point or not, or if copyright still applies, so download at your own risk. I clicked the first download button and not the download original button.
The book is still sold as an e-book:

If it is out of copyright protection, it wouldn't be the first time a book in the public domain was for sale.
Donald KX8K

It was published after 1927, so most likely, it is still under copyright.

Bryan, Thank you much for providing the opportunity to access this magnificent publication.?73 kd2wot / Chris

My copy has 253 pages. My guess is that that is the real thing.

Chuck KF8TI

Here's a link to the document:

73, Bryan, KB?A

Is this the book?



You have to go through the process on that website, then let it compress the book before you download it. I have no idea if it's in the public domain at this point or not, or if copyright still applies, so download at your own risk. I clicked the first download button and not the download original button.

The book is still sold as an e-book:


If it is out of copyright protection, it wouldn't be the first time a book in the public domain was for sale.

Donald KX8K

On Fri, Aug 5, 2022 at 09:49 AM, MICHAEL BELL wrote:

Roger, you make an excellent point. I would however like to point out that I
believe your 100 +j0 and 25 +j0 are swapped. 25 should be on the left side
and 100 should be on the right side of the graph. Am I wrong? Still trying to
learn Smith Charts.
73 Mike N7ATC

Mike,

You are correct. I made an updated post yesterday. Unfortunately the group owner has disabled post editing so I was unable to change the original post. /g/nanovna-users/message/29143

Roger