"Richard Harrison" wrote
On page 99 of Terman`s 1955 edition of "Electronic and Radio
Engineering" (my textbook was an earlier edition) is found the
formula
to convert the reflection coefficient into SWR or vice versa. These
two
parameters are innexorably locked together by formulas (4-22a) and
(4-22b).

=============================================

Richard, I'm afraid your worship of Terman has let you down.

The two parameters are NOT inexorably locked together.

SWR can be calculated from the Reflection Coefficient. But half of
the information is then lost and gone for ever.

And so, NOT vice-versa!
---
Reg.

Dear Richard,

You must have a very extensive library.

By the way, it is NOT Terman or his books which I disdain.

It is the TREATMENT, by his readers, of his books as Bibles which I
disdain.

The situation is on a par with the more modern, unjustifyable,
absolute confidence placed in computer programs and pocket calculators
by their users.

Computer programs have authors. How much confidence can be placed in
THEM is what matters.

Amongst my exceedingly small collection of books is one of Terman's.
It was printed during WW2. I bought it, second hand, just after the
war. 60 years back I learned, critically, a lot from it. Nowadays I
refer to it every few months when searching for something about which
to write another computer program. So the book is still quite
valuable as a comprehensible collection of topics.

I have nothing from Kraus. I know of him only from the frequency at
which he is referred to by bible worshippers on this newsgroup.

I have read about B,L & E. They are the famous trio who left the site
without bothering to measure ground resistivity. Their boss should
have sent them back. Who was HE? He must have known what they were
up to less than THEY did.

Being a WW2 veteran I'm pleased to meet you. The experience, like
mine, was educational. And I'm sure you have a sense of humour
similar to mine. ;o)
----
Regards, Reg, G4FGQ.

Reg Edwards wrote:
I have nothing from Kraus. I know of him only from the frequency at
which he is referred to by bible worshippers on this newsgroup.

Reg, for anyone who is interested, "Antennas for All Applications",
3rd edition, by Kraus and Marhefka, ISBN 0-07-232103-2, is available
"new" or "as new" from the following source for $30. It would be nice
if everyone on this newsgroup would spring for one. It comes close to
being the best $30 that I ever spent on a book.

http://www.abebooks.com/

http://dogbert.abebooks.com/servlet/...072321032&x=54

--
73, Cecil http://www.qsl.net/w5dxp

On Mon, 6 Mar 2006 16:58:03 +0000 (UTC), "Reg Edwards"
wrote:

I have read about B,L & E. They are the famous trio who left the site
without bothering to measure ground resistivity.

This is the makings of Victorian Melodrama, because they also did not
measu
the altitude;
the humidity;
the phase of the moon;
the date of the Paschal moon;
the height of the tide in Tasmania;
the frequency of eruptions from Mt. Etna;
the red shift emitted from the star Betelgeuse.

Of course, Reggie, I will leave you with the last half dozen responses
to flesh out this list.

73's
Richard Clark, KB7QHC

"Richard Harrison" wrote
There really is no need to rename the ubiquituos SWR meter as Reg
has
recommended. This really requires no comment as it isn`t about to
happen.
=========================================

Richard,

Maybe you are right about no need to rename the SWR meter. It does
indeed indicate SWR when located at the correct place in the system,
it is correctly calibrated impedance-wise, and there is a line on
which it can be assumed an SWR exists.

But where the thing is located in 99.9 percent of occasions it
indicates nonsense. Where SWR on the antenna's feedline is concerned
it is totally misleading to novices, CB-ers, amateurs and
professionals alike. Hardly educational!

I have noticed a few references to TLI are beginning to appear. All
that's needed is a sensible Japanese, Chinese or Korean transceiver
manufacturer to face the facts and refer to TLI in an operating or
maintenance manual.

I know its sometimes difficult to learn a new word in a new way of
thinking but force yourself to comply with the obvious!

It's much easier than having to change to the Metric System. The same
economies apply.
----
Reg, G4FGQ.

I have just had several glasses of Australian Zonte's Footstep wine.
I can recommend it. Its name can be traced back to a marsupial which
replaced the dinosaurs. .............

Maybe so, but the name gives me the image of a bunch of VK's stomping
around on a bunch of grapes with their bare feet. Just hoped they
washed
them first... "the feet, more importantly than the grapes" :/
MK