It's not a matter of whether I disagree with him or not. It's a matter
of him standing on a cybersoapbox and declaring to the world in numerous
ways that such a thing cannot work and that only his analysis of how it can
and cannot work is valid. He can't deny that he claimed that it was
impossible, so now he has to prove that the solution cannot possibly work
the way that he knows that it cannot work. Whatever.

Actually, I sort of like all of the visibility he's giving me. More
people are learning that I have solved the problem because of him
broadcasting it and trying desperately to dismiss it than would ever know if
I had just put it on my web page and not said anything. Free advertising.

I also owe it to him for inspiring me to solve the problem. If he
hadn't made such outrageous statements on the QRP-L list I might never have
bothered to look into the problem and learn that nobody had yet solved it,
or at least solved it and made the solution known.

You never know how and when opportunities like this are going to be
dropped in your lap. And sometimes they come from the most unexpected
places. Trick is in recognizing the opportunity and then solving it.

If people were to listen to him, the problem would never be solved
because according to him it is impossible to make such a thing. I've got
three of them on my bench right now made three different ways, and they all
work just fine despite the fact that he says they can't. The low frequency
3dB point is around 600kHz and the high frequency 3dB point is beyond
500MHz. Not bad for a couple of hours of work and a few spare parts from
other projects.

Chris

,----------------------. High Performance Mixers and
/ What's all this \ Amplifiers for RF Communications
/ extinct stuff, anyhow? /
\ _______,--------------' Chris Trask / N7ZWY
_ |/ Principal Engineer
oo\ Sonoran Radio Research
(__)\ _ P.O. Box 25240
\ \ .' `. Tempe, Arizona 85285-5240
\ \ / \
\ '" \ IEEE Senior Member #40274515
. ( ) \
'-| )__| :. \ Email:
| | | | \ '. http://www.home.earthlink.net/~christrask
c__; c__; '-..'.__

Graphics by Loek Frederiks

"John Smith" wrote in message
...
Chris:

You do not agree with any of his analysis?

You do not think this is more of an isolation transformer than a balun?
If not, how do you claim a "transmission line" quality/effect to it?

And, you did notice an insertion loss from this "device", didn't you?

John

"Chris Trask" wrote in message
ink.net...
Be sure to print it out as it changes almost daily. Very strange,
indeed.

--
Chris

,----------------------. High Performance Mixers and
/ What's all this \ Amplifiers for RF Communications
/ extinct stuff, anyhow? /
\ _______,--------------' Chris Trask / N7ZWY
_ |/ Principal Engineer
oo\ Sonoran Radio Research
(__)\ _ P.O. Box 25240
\ \ .' `. Tempe, Arizona 85285-5240
\ \ / \
\ '" \ IEEE Senior Member #40274515
. ( ) \
'-| )__| :. \ Email:
| | | | \ '. http://www.home.earthlink.net/~christrask
c__; c__; '-..'.__

Graphics by Loek Frederiks

"John Smith" wrote in message
...
A very interesting analysis of this design can be found at:
http://www.w8ji.com/balun_single_core_41_analysis.htm

... for those who have not yet seen it.

John

"Chris Trask" wrote in message
ink.net...
In recent days on the QRP-L mailing list, the following remarks
were
made by Tom Rauch, W8JI regarding the design of 4:1 current baluns:

"...it is impossible to build a 4:1 ratio current balun that
uses two 1:1 baluns on a single core."

and:

"It's well established any balun made up of series / parallel
transmission lines requires different voltages from the start
to finish of each transmission line. "

I have devised and modeled a 4:1 current balun using two 1:1 baluns
on
a
single core, and have tested a fully functional prototype. The
design
can
be built without any core, if so desired. The full disclosure of
this
design with all theory, references, and test results can be
obtained
from my
web page at:

http://www.home.earthlink.net/~chris...k4to1Balun.pdf

The design proves beyond all reasonable doubt that the above
statements to
the contrary are, to put it mildly, gravely in error.

Chris

,----------------------. High Performance Mixers and
/ What's all this \ Amplifiers for RF Communications
/ extinct stuff, anyhow? /
\ _______,--------------' Chris Trask / N7ZWY
_ |/ Principal Engineer
oo\ Sonoran Radio Research
(__)\ _ P.O. Box 25240
\ \ .' `. Tempe, Arizona 85285-5240
\ \ / \
\ '" \ IEEE Senior Member #40274515
. ( ) \
'-| )__| :. \ Email:
| | | | \ '.
http://www.home.earthlink.net/~christrask
c__; c__; '-..'.__

Graphics by Loek Frederiks