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